loses fire when it gets a little heat to it

1996 CHEVROLET 3500
13 MILES • 7.4L • 2WD • AUTOMATIC
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PRONOVA444
  • MEMBER
  • 1 POST
i have replaced the timing chain, crank sensor, cam sensor, ICM module, coil, plugs, wires, distributor cap and rotor, injectors and fuel pressure regulator, new ECM reprogrammed, coil ,mass air flow,map sensor.
May 30, 2019 at 11:22 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Welcome to 2CarPros.

I attached two pictures. The first is the ignition coil driver. It's on the rear of the engine block.

First, check the ground to it to confirm there isn't a problem there that is being affected by heat. Next, check the connector to the vehicle control module (VCM) to make sure there is no corrosion, wiring damage, or a damaged pin. The VCM is located on the left front fender apron. See picture 3

Let me know what you find.

Joe
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May 31, 2019 at 7:09 PM
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