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96 gmc 4.3 engine getting 10volts out of coil with ignition switch on. Is this correct. Plugged in spark plug not firing

What should the voltage be? new ignition control module, heat sink, and coil. Has HVS distributor

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  • dkjarrell Oct 28, 2012

    Does something else have to tell the coil to put out high voltage. There are 3 wires. I think it should be putting out about 30,000 volts.

  • Ricky Peters
    Ricky Peters Oct 29, 2012

    The pickup coil.

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  • Cars & Trucks Master
  • 2,620 Answers

Have you replace the ignition pickup inside the distributor .

Posted on Oct 24, 2012

  • 4 more comments 
  • dkjarrell Oct 25, 2012

    Yes couple of yearsb ago. Now I am not getting any firing before it gets to the distributor. I took out a spark plug used the wire ,one end on the spark plug and the other in the output side of the coil. Ignition on and touched the base to ground. No spark at all.

  • Ricky Peters
    Ricky Peters Oct 25, 2012

    Do you have a rpm count when you turn the engine over?

  • Ricky Peters
    Ricky Peters Oct 25, 2012

    If do not see any rpm's on the tachometer then the crank sensor is bad if you do have rpm's showing then i would think the cam position is faulty.

  • dkjarrell Oct 28, 2012

    Engine turns over good. There are no rpm's on tach. Would this make coil to not fire? I have about 1/2 of the crankshaft wheel showing above the crankcase sensor throught het sensor timing cover. Does it need more than that?Had to pull the crankcase count wheel to check timing chain. Was not running before that. Could I have put the counter wheel too far back on the shaft?

  • Ricky Peters
    Ricky Peters Oct 29, 2012

    The pickup coil inside the distributor sends a signal to the computer to fire the coil or coils it could be bad .As for the balancer its goes back on the cranshaft until it bottoms out or until it will not go any further.

  • dkjarrell Oct 29, 2012

    So that is how it works.Thanks for the valuable info. I think you have solved the problem.I am looking at it different now.

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Posted on Jan 02, 2017

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SOURCE: No spark?

Hi, common thing with the mazda was the coil or the ignition amplifier going faulty, both of which are located within the distributor, the coil ususally gives the symptoms you describe, a weak spark. The coil is the most common failure aswell for your vehicle i would recommend a new one, also make sure distributor is spinning as it could just be a case of a broken timing belt.

Good luck Davelee

Posted on Apr 29, 2009

  • 1 Answer

SOURCE: 96 jeep grand cherokee 4.0

change the computer .... PCM get a used one it fixed mine had same problem

Posted on Feb 19, 2009

  • 1 Answer

SOURCE: 1990 FORD F 150,SPARK ON THE COIL BUT NO FROM THE DISTRIBUTOR

i had the same problem. there is a group of wires that go by the distributer and branch off to the distributer and go towards the front. when i would jiggle it the van would die. it ended up being a pinched wire.

Posted on Aug 07, 2009

  • 221 Answers

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.

Posted on Sep 18, 2009

Testimonial: "great info, thanks!"

  • 212 Answers

SOURCE: engine turns over but no spark at the plugs.

You can change pick-up coil, you need to remove distributor (mark where rotor is pointing first) Then you need to remove pin in cam gear on end of shaft to remove gear so you can remove shaft from housing. Then you can replace pick-up coil. Install in reverse. Note when removing distributor rotor will move to the right as you lift distributor out, move rotor to right of mark you made when installing distributor back in.

Posted on Feb 22, 2010

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  1. Note: Electronic Ignition engine timing is entirely controlled by the PCM. Electronic Ignition engine timing is NOT adjustable. Do not attempt to check base timing. You will receive false readings.

The CKP sensor is used to indicate crankshaft position and speed by sensing a missing tooth on a pulse wheel mounted to the crankshaft. The CMP sensor is used by the COP Integrated EI System to identify top dead center of compression of cylinder 1 to synchronize the firing of the individual coils.
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The crankshaft position sensor signal is the basis for ignition timing calculations. The alternating voltage signal from the crankshaft position sensor is digitized by a pulse former within the powertrain control module. This digitized signal is then used to position the closing time of the primary circuit of the ignition coil.
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The ignition system consists of an ignition coil, spark plug wires and spark plugs.
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