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1988 GMC S15 Stalls while driving.

Tiny
IONBLUE
  • MEMBER
  • 1988 GMC S15
  • 135,000 MILES
Fuel Pump has been changed and fuel filter. When truck stalls the check engine light will come on and then the truck starts up. Stalls maybe twice a day. This is a work truck for son.
Tuesday, March 6th, 2012 AT 3:58 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
When the truck shuts off, the check engine light should come on.
When you changed the pump, did they replace the plug on the harness side? It is a common failure, more then the pump.

Otherwise you have a spark issue that is intermittently failing.

Roy
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Tuesday, March 6th, 2012 AT 4:11 PM
Tiny
PRODIGAL_JOHN
  • MEMBER
  • 1 POST
I had a random stalling issue with my 1988 S15 2.8 v6. Could not pin it down because it was random. Turned out to be the ignition module/igniter. I have had them totally fail before, but not intermittently fail. It was only $10 so I changed it so I could rule it out.
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Wednesday, October 12th, 2022 AT 7:47 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

Thanks for that information, John. It will likely help others in the future.

Take care,

Joe
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Friday, October 14th, 2022 AT 10:47 PM

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