It will turn over like it is going to start, but does not?

1999 CHEVROLET TAHOE
180,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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JEANSIMMONS993
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It will turn over like it is going to start, but does not. Three days ago I pulled out my driveway put it it in drive pushed gas petrol and acted as if I ran out of gas and shut off. Hasn't started since. I have checked spark plugs, changed coil, ignition control module, crank sensor, checked voltage. Still not starting. Tested distributor, and button. Please help
Aug 9, 2019 at 7:35 PM
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94 TRANSAM
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Hi, I am sorry you are having issues. Lets see if I can help you.

It can be difficult to figure out whats wrong when a car just shuts off. so lets start at the basics. An internal combustion engine needs 4 things to start and run. If it wont one of these 4 is missing.

1: Air_ Make sure your air filter doesn't have a rats nest in it and can pass air freely.

2: Fuel_ Check your fuel pressure. If it is low it could be a filter or a failing pump or even a crushed line. Here is a link to test that:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

3: Spark_ It sounds like you went through most of the spark components but you didn't say you had it. Here is a link to test for spark:
https://www.2carpros.com/articles/how-to-test-an-ignition-system

4: Compression: https://www.2carpros.com/articles/how-to-test-engine-compression

Give these a go and you should find your issue. Either way let us know how things are going fixed or not. Hope this helps you out! Rich

Jun 5, 2021 at 2:48 PM
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JEANSIMMONS993
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I have done everything you said. Still nothing. No spark no start. Replaced ICM, distributor cap button mass Air flow spark plugs wires.tested everything.
Jun 5, 2021 at 2:48 PM
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STRAILER
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The ICM and PCM work together you might have a bad PCM. Here is a guide so you can check the wiring with the engine wiring diagrams below:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what happens.
Jun 5, 2021 at 2:48 PM
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JEANSIMMONS993
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the pink wire is showing continuity to the ground from the PCM.
Jun 5, 2021 at 2:48 PM