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Not starting

Tiny
KALMER2
  • MEMBER
  • 1991 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • MANUAL
  • 230,000 MILES
On my pickup I can start it, then it just dies right after it starts.I replaced the TPS because it threw the code 22 TPS low voltage, it fixed the code but still starts and dies, new fuel pump and filter, can you help?
Wednesday, May 6th, 2009 AT 4:24 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

You might want to check the fuel pressure. If there is a restriction in the line or a bad pressure regulator, this can starve the engine from fuel, and it will not stay running.

This vehicle should have 9-13 PSI of fuel pressure.

Here is a helpful guide on how to check the fuel pressure:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Another possibility is a dirty idle air control valve. This can also impact the way the engine idles and start up.
The IAC can be cleaned to restore its performance.

https://www.2carpros.com/articles/idle-air-control-valve-service

Please let me know if you have any questions.
Thank you.
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Sunday, November 14th, 2021 AT 7:56 PM

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