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Anonymous Posted on Apr 08, 2012

1992 gmc with 5.7 turns over but no spark and no gas to the injectors replaced the ciol and the control module on the distributer

No gas goes though the injector when turning over and no spark

5 Related Answers

6bta

  • 400 Answers
  • Posted on Jun 19, 2009

SOURCE: GMC not starting first try. replaced starter.

Yes on the fuel pump, sounds like the system is bleeding off the fuel pressure, could also be the regulator.

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Kelly Garvey

  • 230 Answers
  • Posted on Sep 18, 2009

SOURCE: 1990 gmc 6500 topkick with no spark or injector pulse

You are jumping to conclusions. Slow down.
No spark AND no injector pulse indicates none of the desired outputs were triggered. The ignition module makes spark when it receives a crankshaft position sensor signal, and then transfers control of that spark to the computer after it starts. The module takes its crank sensor signal and generates an RPM count that it forwards to the PCM(main computer) which is used for triggering the injectors and controlling timing. SO, if you had a bad crank sensor OR a bad ignition module, you could lose both spark AND fuel. a coil would not disable injector pulse. modules RARELY fail in a manner that disables RPM reference to the computer causing it to not fire the injectors...At this point, I would TEST the crank sensor as the next step. If its easier, 1 of the wires on the module goes directly there so you can test the crank sensor at the module.

Testimonial: "great info, thanks!"

Anonymous

  • 7353 Answers
  • Posted on Oct 17, 2009

SOURCE: OK 1997 gmc sierra 5.7liter 4x4 replaced coil and

Doesnt this engine use a crank position sensor? mounted on timing chain cover.I would check that first

Anonymous

  • 288 Answers
  • Posted on Jan 23, 2010

SOURCE: what will cause a 5.7 2002 gmc savanna not to have

on that engine the crankshaft sensor sends a signal to the pcm to fire the coil the pcm then sends a ground pulse signal to the coil to fire if you check for 12 volts at the coil and it is there with the key turned to run. then use a 12 volt test light hooked up the alagator clip on the positive battery post and touch the probe end of the test light to the pulsing wire at the coil electrical connector white and black wire during cranking the test light should flash.also test pink wire at coil connector for 12 volt with dvom for power.if no 12 volt check fuses with the test light to ground on injector 1 fuse. also ohms test the coil wire no more than 1000 ohms per inch . also check ground at ign module with the test light .Hope this helps thunder boltz please post rating

Anonymous

  • 834 Answers
  • Posted on Jun 22, 2010

SOURCE: Truck will turn over but not start. Checked fuel

The ignition module located inside of the distributor is what generates the signal that the ECM (Engine Control Module) uses to time and fire the fuel injectors, as well as the signal to run the fuel pump and the dwell signal timing to fire the ignition coil. A faulty ignition module can cause any one of these systems to malfunction.

That does sound like a malfunction with the ignition module inside of the distributor, and you can remove the ignition module and have it tested for free at most auto part stores.

If you do purchase a new ignition module be sure that it does come with a silicone grease or a die-electric compound because it is a heat sink and the ignition module will burn up without it.

To install the new ignition module first clean out the mounting surface inside of the distributor. Then completely coat the metal contact surface under the ignition module with a thick coat the silicone grease or die-electric compound and do not leave any of the metal contact surface of the ignition module un-coated with the silicone grease or die-electric compound, and be very careful not to over-tighten the ignition module or it will be damaged.

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Im not really understanding everything that youre saying, but if it just all of a sudden wont start and youre sure that it doesnt have spark, you may want to check to see if the timing belt broke. One way to check, is to take the oil cap off, and have someone try and start the truck. While its trying to start, shine a light into the valve cover and see if the cam is turning. If its not, your timing belt broke and if that broke, youre not going to get spark because the distributer only spins when the cam spins. Good luck!
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1990 gmc 6500 topkick with no spark or injector pulse. all 4 wires on the ignition coil have battery voltage with key on. is coil shorted or is the ignition module bad?

You are jumping to conclusions. Slow down.
No spark AND no injector pulse indicates none of the desired outputs were triggered. The ignition module makes spark when it receives a crankshaft position sensor signal, and then transfers control of that spark to the computer after it starts. The module takes its crank sensor signal and generates an RPM count that it forwards to the PCM(main computer) which is used for triggering the injectors and controlling timing. SO, if you had a bad crank sensor OR a bad ignition module, you could lose both spark AND fuel. a coil would not disable injector pulse. modules RARELY fail in a manner that disables RPM reference to the computer causing it to not fire the injectors...At this point, I would TEST the crank sensor as the next step. If its easier, 1 of the wires on the module goes directly there so you can test the crank sensor at the module.
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94 Honda Accord

sounds like the Ignition Control Module is bad, it's in the dist. I had the same problem with my honda
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Injectors not operating

you need a noid lite to test injectors also its possiable you may have bad igition module even though you have spark
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