What could make a car start idle and shake and then it turn off?

Tiny
NINETTE75
  • MEMBER
  • 1999 GMC JIMMY
  • 167,579 MILES
If the fuel pump is working and the fuel filter is fine what else could make car start idle and shake and then it turn off?
Friday, September 30th, 2022 AT 10:11 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
This could be the IAC motor, vacuum leak, bad spider injector, weak fuel pump. bad PCM for starters. Let's start by running the codes this guide can help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Will it run on starting fluid? This can tell you if the fuel pump is bad or a bad spider injector.

https://www.2carpros.com/articles/car-not-running-advanced

Please go over these guides and report back.
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Friday, September 30th, 2022 AT 11:35 AM

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