crank will not start

1992 GMC SIERRA
180,000 MILES • 5.7L • V8 • AUTOMATIC
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LAUREN MITCHELL
  • MEMBER
  • 1 POST
I have gone through all the basics. I have replaced the coil, distributor cap, rotor, wires and plugs. I have spark to the plug wires but it seems minimal. good spray in the throttle body. Just looking for suggestions.
Jun 22, 2020 at 5:12 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Hi,

If you are getting fuel, then chances are spark is the issue. Is the spark at the plugs a hot blue snapping spark? Have you replaced the ignition control module? Also, have you checked for diagnostic trouble codes?

You don't need a scan tool on this year vehicle. It has an OBD1 system. To get codes all you need is a short jumper wire or even a paper clip. Try this and let me know what you find:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Joe
Jun 22, 2020 at 11:29 AM
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