89 silverado no injector pulse

Next is the "Low Pulse Width Injector Offset Adder Vs. BPW" table. HP Tuners calls this "Short Pulse Adder". Less descriptive, but much easier to say cwm4 In this case the data 'curve' turned out to be a straight line, so a straight application of the following formula y=-.0462+111.53 gives me numbers that drop straight onto the Banish data.89 civic no injector pulse [ 3 Answers ] I have a 89 civic 1.5L, (2 injector) we are not getting an injector pulse. We can pour gas in the trottle body and the car will start and run, but no pulse. 2) Check for spark. When ignition coil is faulty or shorted, no spark is produced resulting in a no injector pulse in car. 3) Listen for clicking sound from the solenoid when starting engine. If no click is heard, then either the fuse has blown or the solenoid and wiring are faulty. 4) Open fuel lines to check if they are blocked by debris.Re: 1989 Silverado Injectors Not Firing 11-25-05 10:19 PM - Post# 823309 In response to saarit The VCM needs to receive ignition reference pulses to turn on the fuel pump and fire the injectors, after you start cranking the motor. Without the reference pulses from the distributor module the VCM does'nt know the engine is being cranked over. May 10, 2005 · Fuel Rail is pressurized. 5. Crank Pos Sensor functional (as far as we can tell) 6. Map Sensor Functional (voltage too the sensor) 7. Throttle Position Sensor is functional. Big clue is the following and explains why its not firing: We stuck a Noid light on two or three injector plugs and. Jan 23, 2013 · 5,531 Answers. The injector ground circuit must not be working. What causes the pulse is when the computer internally grounds the injector circuit, power is passed across the injector solenoid terminals. All the injector grounds are spliced together on each bank of engine, and run into the computer. So, injector power, but no pulsing would seem ... Mar 12, 2012 · Joined Dec 8, 2011. 308 Posts. #5 · Mar 12, 2012. I guess no one reads....injector pulse comes from ecm..via ignition module..pickup coil.Once ecm senses 400 rpm,s from engine it takes over. But injectors pulse works off of ground from ecm...you have to have the grounds at thermostat and intake or will not pulse injectors.Grounds for all sensors. Less Fuel Mileage - Your Silverado's engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren't working properly it can't do that and fuel mileage suffers. Knock/Detonation - Detonation can cause your Silverado's engine to blow.Dec 21, 2011 · A bad ignition module can cause the injectors to not receive the injector pulse for fuel delivery, and no spark to the plugs. Verify that your injectors are actually spraying into the venturi's when the engine is cranking over, and that the fuel you see is not left over from the last time it ran. It enables you to check cylinder balance by firing individual injectors at 1/2-second increments. Three different ranges 1 pulse of 500 milliseconds 50 pulses of 10 milliseconds and 100 pulses of 5 milliseconds. New (12) from $121.98 & FREE Shipping. Only 15 left in stock (more on the way). No - Remove one of the injector connectors from an injector. With a voltmeter or test light measure the voltage or validate power to the pink wire of the connector with the key on. Yes – Pink wire has voltage, go to step 1a. No – There is no power getting to the. F motor / Fuel Gauge - 95-99 old body (square body )Silverado,1500,2500,3500 ... As a result, there is no injector pulse while craking. To check a blown fuse you have to pull the fuse out of its place and check it by seeing the internal wire to see its continuity if you see it cut you have to change it with a new one with the same value, also try to swap the relay with another same value relay and try.No Start No injector pulse (shorted injector) part 1 Watch on This problem is specific to GM vehicles built from the late 80s through the early 90s. Here is a partial list of the cars that used this style fuel injector. 5.0 and 5.7 in the Corvette and Camaro 2.8, 3.1, 3300 (Chevy, Buick, Olds, Pontiac) 1.9 (Saturn) 4.9 (Cadillac)Connect voltmeter positive to YEL/BLK wire of aux injector's connector and negative to the body ground. Turn the ignition ON. If there is no battery voltage for 2 seconds - check it with another ECU. If you get voltage with new ECU - you need to replace your ECU.Nov 09, 2009 · Connect a voltmeter to the 10 (terminal 30) wire at the fuel pump relay connector. Check for battery voltage. If no voltage is present, check fusible links and supply voltage from the battery. If voltage is present proceed to step 2. Connect the voltmeter to the F22 (terminal 87) wire at the fuel pump relay connector. No - Remove one of the injector connectors from an injector. With a voltmeter or test light measure the voltage or validate power to the pink wire of the connector with the key on. Yes – Pink wire has voltage, go to step 1a. No – There is no power getting to the. F motor / Fuel Gauge - 95-99 old body (square body )Silverado,1500,2500,3500 ... SPX OTC Fuel Injection Pulse Tester is designed to check cylinder balance by firing individual injectors. It includes wiring harness adapter and instructions. This tester fires individual injectors in 1/2-second increments in three different ranges which are 1 pulse of 500 milliseconds, 50 pulses of 10 milliseconds, 100 pulses of 5 milliseconds.Aug 24, 2019 · All 3 of these codes will disable fuel injector ground from ecm. Since you have a lt1 engine with optispark, you need to buy a $70 PC based oscilloscope. It is the only 100% way of testing the low & high resolution pulses sent from opti to ecm. If you bought a cheap China made opti, parts store opti, or anything other than a GM, Delco, Delphi ... Nov 29, 2009 · Discussion Starter · #8 · Nov 29, 2009. CFI-EFI said: The ECM only pulses the injectors when it receives the pulses from the distributor, that are generated once the engine begins to turn, much as it re energizes the fuel pump relay when the engine is cranking. If the engine cranks, it is not a VATs problem. No injector pulse, 1989 4 For the 99-04 MY, if you are seeing a COP and fuel injector pulse, this is NOT a PATS problem I did have 1 fuel injector fail at around 650 miles due to dirt getting into the fuel injector I'm trying not to throw parts at it,unnecessarily Fuel pressure is 64 PSI when key is turned on I connected a noid light to the ... Jun 22, 2021 · 5. Disconnect the wiring clips to each injector and begin the test again. With none of the injectors connected, the flickering pulse should transmit through all of the wires without any issue. Use the test light to confirm this on the wire for the last fuel injector clip (at the end of the fuel rail). 1. Does the injector spray fuel when cranking the engine? Yes – Go to step 2. No - Remove one of the injector connectors from an injector. With a voltmeter or test light measure the voltage or validate power to the pink wire of the connector with the key on. Yes – Pink wire has voltage, go to step 1a. No – There is no power getting to the ... Aug 24, 2019 · All 3 of these codes will disable fuel injector ground from ecm. Since you have a lt1 engine with optispark, you need to buy a $70 PC based oscilloscope. It is the only 100% way of testing the low & high resolution pulses sent from opti to ecm. If you bought a cheap China made opti, parts store opti, or anything other than a GM, Delco, Delphi ... Nov 29, 2009 · Discussion Starter · #8 · Nov 29, 2009. CFI-EFI said: The ECM only pulses the injectors when it receives the pulses from the distributor, that are generated once the engine begins to turn, much as it re energizes the fuel pump relay when the engine is cranking. If the engine cranks, it is not a VATs problem. Search: Ls Swap No Spark No Injector Pulse. could also be just a blown ECU fuse on the fuse block The LT1 was fitted in Chevy's Corvette, Camaro and Caprice/Impala SS 95 s14 Chassis swap, no spark,no fuel S Chassis But what's missing is the ground pulse The tranny and engine were never separated The tranny and engine were never separated.The ignition module is what controls the injector pulse and plug wire firing. It sounds to me like that's your problem. On this truck the pick-up coil reads a signal from the spinning distributor shaft and then sends a pulsing power signal to the ignition module. The ignition module then uses that signal to fire the injectors and the plug wires.No pulse to the injectors. I replaced the sending relay to the pump, the pump, coil, Map sensor countless other small parts. I can make it run with a 9V battery across the injector. I am going to try to chase some ignition on voltage but am afraid that i am replacing the ECM.Aug 24, 2019 · All 3 of these codes will disable fuel injector ground from ecm. Since you have a lt1 engine with optispark, you need to buy a $70 PC based oscilloscope. It is the only 100% way of testing the low & high resolution pulses sent from opti to ecm. If you bought a cheap China made opti, parts store opti, or anything other than a GM, Delco, Delphi ... Aug 03, 2009 · I have a 350 tbi engine out of a 89 suburban. I put it in my 87 2500. I used the computer and harness out of the suburban because I had a tpi engine in my truck. My problem is that I don't have a pulse at the injectors. They are getting power though. I have a fuel cell in it and I just wired the fuel pump separate from the stock harness. Mar 12, 2012 · Joined Dec 8, 2011. 308 Posts. #5 · Mar 12, 2012. I guess no one reads....injector pulse comes from ecm..via ignition module..pickup coil.Once ecm senses 400 rpm,s from engine it takes over. But injectors pulse works off of ground from ecm...you have to have the grounds at thermostat and intake or will not pulse injectors.Grounds for all sensors. After sitting long could be water or bad fuel. Drain tank and add plenty of fresh fuel. Try the easy things first. Check to see if a fuel line got pinched putting the tank back in. I've seen this happen before and create that exact issue. Fuel gushes out when key is turned on and line is pulled on carb. No pinched line.Nov 20, 2009 · Re: Getting no injector pulse in my 89 d21 help! (89d21) Quote. Postby seang » Fri Nov 20, 2009 10:48 am. You should connect a multi-meter to the injector plugs, crank the engine, and see if there is any signal/curret going to the injectors. If there is, then you know something is up with the injectors themselves. Aug 05, 2021 · Engine vibrates – When a fuel injector is faulty, the corresponding cylinder will be affected, and thus, it won’t be capable of firing. What this means is that while in motion, your engine is likely to hiccup, or vibrate in a bid to conclude each cycle without the needed fuel. Engine misfires – When a clogged injector stops your engine ... About Swap Pulse No No Spark Injector Ls . Won't Start after replacing Fuel Injector. ... As my title says my 89 m20b20 DME bosche 0261200,172 does not have injection pulse after an engine rebuild, tested pretty much everything and I am on my wits end. ... D585 Ignition Coils 8 Spark Plug Pack For Chevy Silverado LS1 LS3 4. 1g No start No ...SPX OTC Fuel Injection Pulse Tester is designed to check cylinder balance by firing individual injectors. It includes wiring harness adapter and instructions. This tester fires individual injectors in 1/2-second increments in three different ranges which are 1 pulse of 500 milliseconds, 50 pulses of 10 milliseconds, 100 pulses of 5 milliseconds.Mar 04, 2018 · It’s an 89 5.0 with MAF, Has spark, has fuel pressure, no injector pulse. I’ve gone though the checklist and still empty. It will start and run on starting fluid. TPS voltage is 0.9v Voltage at the injectors. I picked up a stock distributor from o Riley, no change, no saying it could not of been dead out of the box. Jun 28, 2021 · Sent ECM to Foreign Auto Computer Repair in TX. Fixed problem $250. First time Poster I need your guys help pöz my b2600i won't start first was not getting spark so replaced the coil and New distributor still no spark replaced ecm with rebuilt one have spark now. But still would not start checked compression its good fuel pressure is good ... I had him go thru the usual stuff, try different modules, crank sensors, trace every wire back to the ecm, try a different ecm, etc No injector pulse, 1989 4 on the ecu pin plug (big blue) find the wire color for the injector - pulse The Test: First, check for both spark and injector pulse With the Edelbrock intake, we simply made plugs that blocked off the injector bungs With the Edelbrock ... Technical & Advanced. Ask the GM Technician. 94 chevy 350 No pulse at tbi injectors. Wont start. Sign up for FREE! Become a GM-Trucks.com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs.Dec 15, 2005 · it it throttle body injection, or port injection? if i remember right, 89's are throttle body. fuel pressure on these should be 12-15 psi regulated. deadheaded, the pump should put out around 15-18 max. port fuel injection on chevys started with CFI systems, and running pressure on these systems was 58-62, about 80 with the pump deadheaded. be sure to check your service manual though, as it ... Re: 1989 Silverado Injectors Not Firing 11-25-05 10:19 PM - Post# 823309 In response to saarit The VCM needs to receive ignition reference pulses to turn on the fuel pump and fire the injectors, after you start cranking the motor. Without the reference pulses from the distributor module the VCM does'nt know the engine is being cranked over.Stopped running while driving. replaced cam and crank sensors, replaced battery, and checked for fuel delivery. has good power and fuel but no spark what so ever or injector pulse, has power at the fuses while on run and crank position but no pulse at plug. Took it to a shop and they couldn't find the issue either, ive been dealing with this for 3 weeks now and still nothing so im just looking ...No Spark - 4.3L S10 Pickup. The engine stopped while I was driving down the highway at 60mph. I could not get it to restart. Had a tow-truck take us home. >10v at A, <10v at D (This is the problem) The ICM is new also. I have also replaced the Coil Wire, Cap & Rotor. The Crankshaft Postion Sensor tests fine.About Swap Pulse No No Spark Injector Ls . Won't Start after replacing Fuel Injector. ... As my title says my 89 m20b20 DME bosche 0261200,172 does not have injection pulse after an engine rebuild, tested pretty much everything and I am on my wits end. ... D585 Ignition Coils 8 Spark Plug Pack For Chevy Silverado LS1 LS3 4. 1g No start No ...PCM Connector: Blue (C1) 1996-1997. The 1996-97 PCM (Powertrain Control Module = Fuel Injection Computer) on your 4.3L, 5.0L or 5.7L Engine has a total of 4 connectors. NOTE: For other PCM pin-out charts, take a look at the following: 1993 PCM Pin Out Chart (GM 4.3L, 5.0L, 5.7L GAS w/ 4L60-E).No injector pulse TBI. BobM46128. 10-25-2004, 01:01 AM. I pulled the old 4.3 and put a 5.0 from a '92 Camaro into our '88 C-1500 PU. There was no spark or injector pulses when it was time for start up. We replaced the ignition module in the distributor, but had no spark still.Next is the "Low Pulse Width Injector Offset Adder Vs. BPW" table. HP Tuners calls this "Short Pulse Adder". Less descriptive, but much easier to say cwm4 In this case the data 'curve' turned out to be a straight line, so a straight application of the following formula y=-.0462+111.53 gives me numbers that drop straight onto the Banish data.It enables you to check cylinder balance by firing individual injectors at 1/2-second increments. Three different ranges 1 pulse of 500 milliseconds 50 pulses of 10 milliseconds and 100 pulses of 5 milliseconds. New (12) from $121.98 & FREE Shipping. Only 15 left in stock (more on the way). It enables you to check cylinder balance by firing individual injectors at 1/2-second increments. Three different ranges 1 pulse of 500 milliseconds 50 pulses of 10 milliseconds and 100 pulses of 5 milliseconds. New (12) from $121.98 & FREE Shipping. Only 15 left in stock (more on the way). Chevy Silverado no spark or injector pulse problem fixedNewest Chevy Silverado Forum Questions And Answers. Battery light won't go out. I have a 2000 Chevy Silverado 4.3L V6. My Battery light came on & then would go out every time I drove it then it came on & never extinguished. I got it checked & it was a voltage regulator bad.Newest Chevy Silverado Forum Questions And Answers. Battery light won't go out. I have a 2000 Chevy Silverado 4.3L V6. My Battery light came on & then would go out every time I drove it then it came on & never extinguished. I got it checked & it was a voltage regulator bad.MOST the time No spark/no injector pulse/no fuel pump prime (by bumping the starter) is cranksensor You still don't have spark or injector pulse; this should be looked into first You should get battery volts with the key on, ground is supplied by the ECU to fire each injector Ordering new speed and CPS - bottom 2 Reversed sensors in case only one is bad but no spark Cleaned those and cleaned 5 ...Oct 12, 2013 · 529 Posts. #2 · Oct 12, 2013. fromtheshadows said: 1989 bmw 325i with a little over 83k. Car will run good all day on ether but will not start without .Obc gives fault code 1252 - Fuel Injector #2 (single or group). Crank sensor was replaced, all relays seem ok, fuel presure good, changed ECU still nothing ...just no pulse going to the injectors. If resistance is out of specifications - manual suggests you get new injectors. If resistance is OK - do like this: Turn the ignition switch ON. Measure voltage (on auxiliary injector's 2 pin connector) between the YEL wire and body ground. You should get around 10V. If there is no 10V - repair open or short in YEL wire between aux. injector ... Connect voltmeter positive to YEL/BLK wire of aux injector's connector and negative to the body ground. Turn the ignition ON. If there is no battery voltage for 2 seconds - check it with another ECU. If you get voltage with new ECU - you need to replace your ECU.Jan 16, 2013 · No unusual sounds when its cranking. I checked the compression and its good, fuel pressure read 42-44psi on prime. I hit it up with some starting fluid and it starts to run so its sparking. Threw a noid light on all the injectors and nothing. Double checked my bonny and the light is working. 5. Disconnect the wiring clips to each injector and begin the test again. With none of the injectors connected, the flickering pulse should transmit through all of the wires without any issue. Use the test light to confirm this on the wire for the last fuel injector clip (at the end of the fuel rail).Chevy Silverado no spark or injector pulse problem fixedNo unusual sounds when its cranking. I checked the compression and its good, fuel pressure read 42-44psi on prime. I hit it up with some starting fluid and it starts to run so its sparking. Threw a noid light on all the injectors and nothing. Double checked my bonny and the light is working.it controls injector pulse (the opening and closing of the injectors) and the ignition spark. they aren't expensive and go out all the time. it is under your distributor cap in the base of the distributor. ... 1991 Chevy Silverado K1500 ECSB, 350, 700R4 w/shift kit, 3.42's, exhaust work... 1983 GMC Sierra K1500 SWB-sold . DnStClr. Senior Member;No pulse to the injectors. I replaced the sending relay to the pump, the pump, coil, Map sensor countless other small parts. I can make it run with a 9V battery across the injector. I am going to try to chase some ignition on voltage but am afraid that i am replacing the ECM.Now I have no injector pulse when starting. Truck will start on starting fluid but still no puse when running either. I had good injector pulse yesterday but now she is dead. Heres were it gets strange. Both injector coils have a resistance of 1.5 ohms (good), I have a constant ground on one wire of each injector plug (bad)Nov 15, 2005 · After I replaced the FPR no problems. The FPR looks like an in-line filter that has a fuel line in one end and a vacuum hose on the other, it is left of the throttle body. Pull the vacuum hose off and turn the key on (engine off) to pressurize the system. If there is gas coming out of the vacuum end, the FPR is bad. Feb 10, 2011 · ck35004dr said: i have a 1989 chevy 2500 silerado 5.7 tbi 4x4 it sat for two years. i tried to start it. it starts up runs for 30 sec. then shuts down. i had a tune up a new fuel tank line pump and filter put on before it sat. thinking the pump or filter was bad again. i put a new fuel pump filter. and complete tune up on the truck, it still ... Chevy Silverado no spark or injector pulse problem fixed Apr 30, 2011 · Location: Manchester NH. Vehicle: 00 Leggy Wagon. 99 Silverado, 06 HD. Help; No spark, No injector pulse, No start! I have a 03 Wrx that has no spark and no injector pulse. After cranking for a while I will get a crank sensor code. I have replaced the crank sensor, ohm tested all the wiring, timing is good, tried a new ecu, still no start. Apr 23, 2011 · 3. Tap test light from B+ to reference high terminal Key On, Engine Off (KOEO). Injectors should pulse. 4. If injectors pulse test pickup coil output backprobed at pick up coil connector with AC voltmeter. Should be 0.7 volts AC minimum and stable at cranking RPM. 5. If the signal is weak replace distributor shaft and pick up coil. 6. The sensor tells the ECM the amount of oxygen in the exhaust gas, and the ECM changes the air/fuel ratio to the engine by controlling the fuel injector. A 14.7:1 air/fuel ratio is required for efficient catalytic convertor operation. Because of the constant measuring and adjusting of the air/fuel ratio, the fuel system is called a "Closed ...An injector that is pulsed 100 times for five milliseconds should produce a minimum pressure drop of about 1 to 3 psi, and no more than 5 to 7 psi, depending on the application. The difference in pressure drop between all the injectors should be 2 psi or less. Technical & Advanced. Ask the GM Technician. 94 chevy 350 No pulse at tbi injectors. Wont start. Sign up for FREE! Become a GM-Trucks.com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs.After sitting long could be water or bad fuel. Drain tank and add plenty of fresh fuel. Try the easy things first. Check to see if a fuel line got pinched putting the tank back in. I've seen this happen before and create that exact issue. Fuel gushes out when key is turned on and line is pulled on carb. No pinched line.It does have voltage on the injector with the key in on position. The check engine light does not light up with the key on. The scanner will not communicate the ecm. The grounds are good on the ob connector it has voltage the ob connector and I checked the tan wire from the ob connector to the ecm no problem. Was this answer helpful? Yes No +1Mar 05, 2020 · If still no injector pulse, check power feed to the distributor; if power feed is good, ignition module in distributor is bad. ... 89 chevy silverado 5.7L manual 5 ... Search: Ls Swap No Spark No Injector Pulse. could also be just a blown ECU fuse on the fuse block The LT1 was fitted in Chevy's Corvette, Camaro and Caprice/Impala SS 95 s14 Chassis swap, no spark,no fuel S Chassis But what's missing is the ground pulse The tranny and engine were never separated The tranny and engine were never separated.If resistance is out of specifications - manual suggests you get new injectors. If resistance is OK - do like this: Turn the ignition switch ON. Measure voltage (on auxiliary injector's 2 pin connector) between the YEL wire and body ground. You should get around 10V. If there is no 10V - repair open or short in YEL wire between aux. injector ... $34.89 - $364.16. Standard® Fuel Injector. 1 # 175657688. Chevy Silverado 2009, Fuel Injector by Standard®. Bring your vehicle's fuel system back to its top shape with this top-notch part. ... Chevy Silverado 6.6L 2009, Fuel Injector by Bosch®. Replace a defective fuel injector and get rid of poor fuel economy and sluggish performance. The ...89 civic no injector pulse [ 3 Answers ] I have a 89 civic 1.5L, (2 injector) we are not getting an injector pulse. We can pour gas in the trottle body and the car will start and run, but no pulse. 89 2.5 s10 no injector pulse. I bought this truck the other day kid has replaced, fuel pump, filter, lines, plugs, plug wires, distributor cap, rotor button, and injector. I replaced the ignition control module and it ran perfect for about 30 mins i put it in reverse let out on clutch and it died. Now i'm back to square 1 with no injector pulse.89 2.5 s10 no injector pulse. I bought this truck the other day kid has replaced, fuel pump, filter, lines, plugs, plug wires, distributor cap, rotor button, and injector. I replaced the ignition control module and it ran perfect for about 30 mins i put it in reverse let out on clutch and it died. Now i'm back to square 1 with no injector pulse.Jun 22, 2021 · 5. Disconnect the wiring clips to each injector and begin the test again. With none of the injectors connected, the flickering pulse should transmit through all of the wires without any issue. Use the test light to confirm this on the wire for the last fuel injector clip (at the end of the fuel rail). ' 95 K1500 Z71 EC Short Step 5.7L+0.040/NV3500 SOLD ... ‘01 Silverado 2500HD 8.1/Allison 1000 Xcab/LB ... spent 3 hours cranking on it and probing around for broken wires and using my Actron Multimeter- Still no injector pulse and I had just about decided to sell the new motor and scrap the rest of it because I couldnt afford computer programs. Aug 16, 2010 · odcc09. 89 2.5 s10 no injector pulse. I bought this truck the other day kid has replaced, fuel pump, filter, lines, plugs, plug wires, distributor cap, rotor button, and injector. I replaced the ignition control module and it ran perfect for about 30 mins i put it in reverse let out on clutch and it died. An injector that is pulsed 100 times for five milliseconds should produce a minimum pressure drop of about 1 to 3 psi, and no more than 5 to 7 psi, depending on the application. The difference in pressure drop between all the injectors should be 2 psi or less.Rapid-Pulse Technology ensures proper fuel delivery at all RPM ranges. Robotic Build Technology allows for consistent build quality and specification balance ... JDMON Compatible with Fuel Injectors Chevy Silverado 1500 2500 3500 Tahoe compatible with GMC Sierra 1500 2500 3500 Tahoe 4.8L 5.3L 6.0L 2001-2006 Replace 17113553 FJ315 17113698 8pcs ...It enables you to check cylinder balance by firing individual injectors at 1/2-second increments. Three different ranges 1 pulse of 500 milliseconds 50 pulses of 10 milliseconds and 100 pulses of 5 milliseconds. New (12) from $121.98 & FREE Shipping. Only 15 left in stock (more on the way). After sitting long could be water or bad fuel. Drain tank and add plenty of fresh fuel. Try the easy things first. Check to see if a fuel line got pinched putting the tank back in. I've seen this happen before and create that exact issue. Fuel gushes out when key is turned on and line is pulled on carb. No pinched line.It does have voltage on the injector with the key in on position. The check engine light does not light up with the key on. The scanner will not communicate the ecm. The grounds are good on the ob connector it has voltage the ob connector and I checked the tan wire from the ob connector to the ecm no problem. Was this answer helpful? Yes No +1You may notice poor engine performance including irregular acceleration, misfiring, hard starting, or surging. On some car models, a failed CMP sensor will prevent the ignition from making a spark, so that the engine won't start at all. Camshaft position sensor. Photo courtesy of Wanna Be Creative on Flickr.Mar 04, 2018 · It’s an 89 5.0 with MAF, Has spark, has fuel pressure, no injector pulse. I’ve gone though the checklist and still empty. It will start and run on starting fluid. TPS voltage is 0.9v Voltage at the injectors. I picked up a stock distributor from o Riley, no change, no saying it could not of been dead out of the box. $34.89 - $364.16. Standard® Fuel Injector. 1 # 175657688. Chevy Silverado 2009, Fuel Injector by Standard®. Bring your vehicle's fuel system back to its top shape with this top-notch part. ... Chevy Silverado 6.6L 2009, Fuel Injector by Bosch®. Replace a defective fuel injector and get rid of poor fuel economy and sluggish performance. The ...Re: 1989 Silverado Injectors Not Firing 11-25-05 10:19 PM - Post# 823309 In response to saarit The VCM needs to receive ignition reference pulses to turn on the fuel pump and fire the injectors, after you start cranking the motor. Without the reference pulses from the distributor module the VCM does'nt know the engine is being cranked over.If resistance is out of specifications - manual suggests you get new injectors. If resistance is OK - do like this: Turn the ignition switch ON. Measure voltage (on auxiliary injector's 2 pin connector) between the YEL wire and body ground. You should get around 10V. If there is no 10V - repair open or short in YEL wire between aux. injector ... Fuel Injector Clinic's Fuel Injector Set 445cc takes a moderate amount of skill to install. However, the process can be completed in just 2 hours. Application. The Fuel Injector Set 445cc by Fuel Injector Clinic is a perfect fit for all 2007-2013 GMC Sierra 1500 V8s. Shop All Truck Parts And Accessories. Shop All Truck Engine Parts And AccessoriesNov 29, 2009 · Discussion Starter · #8 · Nov 29, 2009. CFI-EFI said: The ECM only pulses the injectors when it receives the pulses from the distributor, that are generated once the engine begins to turn, much as it re energizes the fuel pump relay when the engine is cranking. If the engine cranks, it is not a VATs problem. Apr 23, 2011 · 3. Tap test light from B+ to reference high terminal Key On, Engine Off (KOEO). Injectors should pulse. 4. If injectors pulse test pickup coil output backprobed at pick up coil connector with AC voltmeter. Should be 0.7 volts AC minimum and stable at cranking RPM. 5. If the signal is weak replace distributor shaft and pick up coil. 6. Aug 05, 2021 · Engine vibrates – When a fuel injector is faulty, the corresponding cylinder will be affected, and thus, it won’t be capable of firing. What this means is that while in motion, your engine is likely to hiccup, or vibrate in a bid to conclude each cycle without the needed fuel. Engine misfires – When a clogged injector stops your engine ... Aug 05, 2021 · Engine vibrates – When a fuel injector is faulty, the corresponding cylinder will be affected, and thus, it won’t be capable of firing. What this means is that while in motion, your engine is likely to hiccup, or vibrate in a bid to conclude each cycle without the needed fuel. Engine misfires – When a clogged injector stops your engine ... No - Remove one of the injector connectors from an injector. With a voltmeter or test light measure the voltage or validate power to the pink wire of the connector with the key on. Yes – Pink wire has voltage, go to step 1a. No – There is no power getting to the. F motor / Fuel Gauge - 95-99 old body (square body )Silverado,1500,2500,3500 ... Mar 23, 2022 · What causes no injector pulse? When the fuel is sprayed and make a mixture with the air inside the intake manifold, and due to low pressure in the intake manifold the air/fuel mixture vaporizes that where the fuel injection ECU sensor works and send a signal to ECU to provide the right air/fuel mixture ratio, the volume of the fuel to be drawn from the fuel pump determined by the volume of the ... There is an injector fuse. Pull an injector plug , 1 wire should have 12 volts to it. the other goes to the PCM. The PCM is set up so that it has individual injector drivers, Meaning that you could loose 1 or 2, but loosing all 6 at one time is very unlikely. Injectors do run off both crank and cam sensors, but mostly off the cam.Oct 25, 2012 · 1989 chevy: no pulse signal at my injectors..ecm..sending unit..psi 1989 chevy 3/4ton I have no pulse signal at my injectors wich means no fuel to the tbi I have replaced the ecm the ignition module fuel pump has been replaced sending unit fuel regulator i have 10 psi … ' 95 K1500 Z71 EC Short Step 5.7L+0.040/NV3500 SOLD ... ‘01 Silverado 2500HD 8.1/Allison 1000 Xcab/LB ... spent 3 hours cranking on it and probing around for broken wires and using my Actron Multimeter- Still no injector pulse and I had just about decided to sell the new motor and scrap the rest of it because I couldnt afford computer programs. Search: Ls Swap No Spark No Injector Pulse. could also be just a blown ECU fuse on the fuse block The LT1 was fitted in Chevy's Corvette, Camaro and Caprice/Impala SS 95 s14 Chassis swap, no spark,no fuel S Chassis But what's missing is the ground pulse The tranny and engine were never separated The tranny and engine were never separated.Engine still cranks with no start. The injectors drip fuel, but not even enough to smell fuel. I have my injectors set: Injector dead time: 0.6ms battery correction: 0.2ms/V PWM current limit: on PWM current limit: 30% PWM time threshold: 2.4ms PWM period: 66us The injectors are: GM 4.3 v6 45# 1.6 ohms with meter 9lbs of fuel at tbi meter.Chevy Silverado no spark or injector pulse problem fixed Nov 15, 2005 · After I replaced the FPR no problems. The FPR looks like an in-line filter that has a fuel line in one end and a vacuum hose on the other, it is left of the throttle body. Pull the vacuum hose off and turn the key on (engine off) to pressurize the system. If there is gas coming out of the vacuum end, the FPR is bad. An injector that is pulsed 100 times for five milliseconds should produce a minimum pressure drop of about 1 to 3 psi, and no more than 5 to 7 psi, depending on the application. The difference in pressure drop between all the injectors should be 2 psi or less. Aug 24, 2019 · All 3 of these codes will disable fuel injector ground from ecm. Since you have a lt1 engine with optispark, you need to buy a $70 PC based oscilloscope. It is the only 100% way of testing the low & high resolution pulses sent from opti to ecm. If you bought a cheap China made opti, parts store opti, or anything other than a GM, Delco, Delphi ... Jan 23, 2013 · 5,531 Answers. The injector ground circuit must not be working. What causes the pulse is when the computer internally grounds the injector circuit, power is passed across the injector solenoid terminals. All the injector grounds are spliced together on each bank of engine, and run into the computer. So, injector power, but no pulsing would seem ... No - Remove one of the injector connectors from an injector. With a voltmeter or test light measure the voltage or validate power to the pink wire of the connector with the key on. Yes – Pink wire has voltage, go to step 1a. No – There is no power getting to the. F motor / Fuel Gauge - 95-99 old body (square body )Silverado,1500,2500,3500 ... The injectors get ignition 12 volts with the key on, and the pcm pulses the ground signal to fire the injectors . The pcm has 4 grounds which I have confirmed are all good, and even re-ran new grounds straight to the battery to rule out a weak ground. Aug 24, 2019 · All 3 of these codes will disable fuel injector ground from ecm. Since you have a lt1 engine with optispark, you need to buy a $70 PC based oscilloscope. It is the only 100% way of testing the low & high resolution pulses sent from opti to ecm. If you bought a cheap China made opti, parts store opti, or anything other than a GM, Delco, Delphi ... Fuel Injectors in stock now! Free Shipping & Lowest Price Guaranteed. Read 25+ Customer Reviews, Shop online or Call 800-544-8778. ... Chevy Silverado . Dodge Ram. Ford F-150. GMC Sierra. Nissan Titan. Toyota Tacoma. Toyota Tundra. SUVs. Ford Edge. GMC Arcadia. Honda CR-V. ... From $386. 95 . Not Yet Rated. Aug 03, 2009 · I have a 350 tbi engine out of a 89 suburban. I put it in my 87 2500. I used the computer and harness out of the suburban because I had a tpi engine in my truck. My problem is that I don't have a pulse at the injectors. They are getting power though. I have a fuel cell in it and I just wired the fuel pump separate from the stock harness. If resistance is out of specifications - manual suggests you get new injectors. If resistance is OK - do like this: Turn the ignition switch ON. Measure voltage (on auxiliary injector's 2 pin connector) between the YEL wire and body ground. You should get around 10V. If there is no 10V - repair open or short in YEL wire between aux. injector ... Replied by Chad on topic 98 chevy silverado 4.3l no injector pulse wont fire up Possibly, since the remote start was removed and is now back to stock, the Passlock module may need to RE-Learn the value created by the Passlock Sensor. When the security light is working, and the system is triggered, car will start and stall, the light will flash.1. Does the injector spray fuel when cranking the engine? Yes – Go to step 2. No - Remove one of the injector connectors from an injector. With a voltmeter or test light measure the voltage or validate power to the pink wire of the connector with the key on. Yes – Pink wire has voltage, go to step 1a. No – There is no power getting to the ... 89 civic no injector pulse [ 3 Answers ] I have a 89 civic 1.5L, (2 injector) we are not getting an injector pulse. We can pour gas in the trottle body and the car will start and run, but no pulse. PCM Connector: Blue (C1) 1996-1997. The 1996-97 PCM (Powertrain Control Module = Fuel Injection Computer) on your 4.3L, 5.0L or 5.7L Engine has a total of 4 connectors. NOTE: For other PCM pin-out charts, take a look at the following: 1993 PCM Pin Out Chart (GM 4.3L, 5.0L, 5.7L GAS w/ 4L60-E).You may notice poor engine performance including irregular acceleration, misfiring, hard starting, or surging. On some car models, a failed CMP sensor will prevent the ignition from making a spark, so that the engine won't start at all. Camshaft position sensor. Photo courtesy of Wanna Be Creative on Flickr.I had him go thru the usual stuff, try different modules, crank sensors, trace every wire back to the ecm, try a different ecm, etc No injector pulse, 1989 4 on the ecu pin plug (big blue) find the wire color for the injector - pulse The Test: First, check for both spark and injector pulse With the Edelbrock intake, we simply made plugs that blocked off the injector bungs With the Edelbrock ... Sep 06, 2012 · Rj7926 Registered users Posts: 5 Joined: Thu Sep 06, 2012 12:03 am Make: Mazda Model: 929 Year: 1989 Body Code: HC The sensor tells the ECM the amount of oxygen in the exhaust gas, and the ECM changes the air/fuel ratio to the engine by controlling the fuel injector. A 14.7:1 air/fuel ratio is required for efficient catalytic convertor operation. Because of the constant measuring and adjusting of the air/fuel ratio, the fuel system is called a "Closed ...An injector that is pulsed 100 times for five milliseconds should produce a minimum pressure drop of about 1 to 3 psi, and no more than 5 to 7 psi, depending on the application. The difference in pressure drop between all the injectors should be 2 psi or less.Re: 1989 Silverado Injectors Not Firing 11-25-05 10:19 PM - Post# 823309 In response to saarit The VCM needs to receive ignition reference pulses to turn on the fuel pump and fire the injectors, after you start cranking the motor. Without the reference pulses from the distributor module the VCM does'nt know the engine is being cranked over. 1. Does the injector spray fuel when cranking the engine? Yes – Go to step 2. No - Remove one of the injector connectors from an injector. With a voltmeter or test light measure the voltage or validate power to the pink wire of the connector with the key on. Yes – Pink wire has voltage, go to step 1a. No – There is no power getting to the ... ck35004dr said: i have a 1989 chevy 2500 silerado 5.7 tbi 4x4 it sat for two years. i tried to start it. it starts up runs for 30 sec. then shuts down. i had a tune up a new fuel tank line pump and filter put on before it sat. thinking the pump or filter was bad again. i put a new fuel pump filter. and complete tune up on the truck, it still ...Dec 21, 2011 · A bad ignition module can cause the injectors to not receive the injector pulse for fuel delivery, and no spark to the plugs. Verify that your injectors are actually spraying into the venturi's when the engine is cranking over, and that the fuel you see is not left over from the last time it ran. No Start No injector pulse (shorted injector) part 1 Watch on This problem is specific to GM vehicles built from the late 80s through the early 90s. Here is a partial list of the cars that used this style fuel injector. 5.0 and 5.7 in the Corvette and Camaro 2.8, 3.1, 3300 (Chevy, Buick, Olds, Pontiac) 1.9 (Saturn) 4.9 (Cadillac)Engine stalls or rough idle - Once your automobile fails to get enough quantity of fuel, or the fuel is unevenly supplied, it will cause the RPM to drop below its optimal level while idling, and the resultant effect is an uneven or rough violent idle. There may be the need to restart, if the RPM drops too low, causing the vehicle to stall. Engine vibrates - When a fuel injector is faulty ...Dec 21, 2011 · A bad ignition module can cause the injectors to not receive the injector pulse for fuel delivery, and no spark to the plugs. Verify that your injectors are actually spraying into the venturi's when the engine is cranking over, and that the fuel you see is not left over from the last time it ran. 89 civic no injector pulse [ 3 Answers ] I have a 89 civic 1.5L, (2 injector) we are not getting an injector pulse. We can pour gas in the trottle body and the car will start and run, but no pulse. Chevy Silverado no spark or injector pulse problem fixedOct 25, 2004 · No injector pulse TBI. BobM46128. 10-25-2004, 01:01 AM. I pulled the old 4.3 and put a 5.0 from a '92 Camaro into our '88 C-1500 PU. There was no spark or injector pulses when it was time for start up. We replaced the ignition module in the distributor, but had no spark still. Fuel Injector Clinic's Fuel Injector Set 445cc takes a moderate amount of skill to install. However, the process can be completed in just 2 hours. Application. The Fuel Injector Set 445cc by Fuel Injector Clinic is a perfect fit for all 2007-2013 GMC Sierra 1500 V8s. Shop All Truck Parts And Accessories. Shop All Truck Engine Parts And AccessoriesJul 17, 2019 · Less Fuel Mileage – Your Silverado’s engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren’t working properly it can’t do that and fuel mileage suffers. Knock/Detonation – Detonation can cause your Silverado’s engine to blow. Apr 30, 2011 · Location: Manchester NH. Vehicle: 00 Leggy Wagon. 99 Silverado, 06 HD. Help; No spark, No injector pulse, No start! I have a 03 Wrx that has no spark and no injector pulse. After cranking for a while I will get a crank sensor code. I have replaced the crank sensor, ohm tested all the wiring, timing is good, tried a new ecu, still no start. Jul 17, 2019 · Less Fuel Mileage – Your Silverado’s engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren’t working properly it can’t do that and fuel mileage suffers. Knock/Detonation – Detonation can cause your Silverado’s engine to blow. 1991 Chevrolet C1500. I have absolutely no spark..ive changed everything from the pick up inside the dist,the module rotor cap wires plugs and coil...still no spark whatsoever...done a top dead center test, its all still in time..ive checked all fuses and relays...I just cant figure it out...and by no spark I mean anywhere coil plugs..plug in ...No Spark - 4.3L S10 Pickup. The engine stopped while I was driving down the highway at 60mph. I could not get it to restart. Had a tow-truck take us home. >10v at A, <10v at D (This is the problem) The ICM is new also. I have also replaced the Coil Wire, Cap & Rotor. The Crankshaft Postion Sensor tests fine.Chevy Silverado no spark or injector pulse problem fixed Dark Green w/ White stripe. A/C Relay Enable Relay Control. 10. Brown. EGR Pintle Position. 11. Light Green w/ Black stripe. Injector #2 Control ( Except 4.3L) 12.After sitting long could be water or bad fuel. Drain tank and add plenty of fresh fuel. Try the easy things first. Check to see if a fuel line got pinched putting the tank back in. I've seen this happen before and create that exact issue. Fuel gushes out when key is turned on and line is pulled on carb. No pinched line.An injector that is pulsed 100 times for five milliseconds should produce a minimum pressure drop of about 1 to 3 psi, and no more than 5 to 7 psi, depending on the application. The difference in pressure drop between all the injectors should be 2 psi or less.Now I have no injector pulse when starting. Truck will start on starting fluid but still no puse when running either. I had good injector pulse yesterday but now she is dead. Heres were it gets strange. Both injector coils have a resistance of 1.5 ohms (good), I have a constant ground on one wire of each injector plug (bad)Jun 22, 2021 · 5. Disconnect the wiring clips to each injector and begin the test again. With none of the injectors connected, the flickering pulse should transmit through all of the wires without any issue. Use the test light to confirm this on the wire for the last fuel injector clip (at the end of the fuel rail). Nov 20, 2009 · Re: Getting no injector pulse in my 89 d21 help! (89d21) Quote. Postby seang » Fri Nov 20, 2009 10:48 am. You should connect a multi-meter to the injector plugs, crank the engine, and see if there is any signal/curret going to the injectors. If there is, then you know something is up with the injectors themselves. 92 chevy silverado truck will ecm" not let engine fire. If it has an ignition module and fuel injectors than absolutely. Normally it is either missing spark but has injector pulse, this would typically be a bad ignition module or coil. If it is missing both spark and injector pulse it is more likely a pickup coil in the distributor.. "/> ck35004dr said: i have a 1989 chevy 2500 silerado 5.7 tbi 4x4 it sat for two years. i tried to start it. it starts up runs for 30 sec. then shuts down. i had a tune up a new fuel tank line pump and filter put on before it sat. thinking the pump or filter was bad again. i put a new fuel pump filter. and complete tune up on the truck, it still ...Mar 08, 2011 · Then using a Pin poke behind the wire and make sure that all the Injectors have. +12 Volts on the same pin. i.e. all the lefts or all the rights have +12 Volts between the pin you poked in and chasiss ground. Next you must. Put your MM into buzzer / continuty mode and check the other pins (The earth pins). ck35004dr said: i have a 1989 chevy 2500 silerado 5.7 tbi 4x4 it sat for two years. i tried to start it. it starts up runs for 30 sec. then shuts down. i had a tune up a new fuel tank line pump and filter put on before it sat. thinking the pump or filter was bad again. i put a new fuel pump filter. and complete tune up on the truck, it still ...2004 V6 Silverado Swapped to a LQ4/L92 setup ... 2/4/5 no injector firing, but 4 doesn't have spark either. I'm having Zach look over the harness today and check all the grounds. ... Yeah, I'm leaning towards the negative from the computer not being supplied (again no noid light so I didn't check the pulse to the injectors).Crankshaft Position Sensor No Spark. First of all, look for any broken, loose or corroded wires, from the sensor to the (PCM). The crankshaft position (CKP) sensor monitors the position or rotational speed of the crankshaft. If the crankshaft position sensor has failed completely, and isn't sending a signal to the (ECU) at all; then the computer won't send any fuel to the injectors.The injectors get ignition 12 volts with the key on, and the pcm pulses the ground signal to fire the injectors . The pcm has 4 grounds which I have confirmed are all good, and even re-ran new grounds straight to the battery to rule out a weak ground. 1991 Chevrolet C1500. I have absolutely no spark..ive changed everything from the pick up inside the dist,the module rotor cap wires plugs and coil...still no spark whatsoever...done a top dead center test, its all still in time..ive checked all fuses and relays...I just cant figure it out...and by no spark I mean anywhere coil plugs..plug in ...PCM Connector: Blue (C1) 1996-1997. The 1996-97 PCM (Powertrain Control Module = Fuel Injection Computer) on your 4.3L, 5.0L or 5.7L Engine has a total of 4 connectors. NOTE: For other PCM pin-out charts, take a look at the following: 1993 PCM Pin Out Chart (GM 4.3L, 5.0L, 5.7L GAS w/ 4L60-E). X_1