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Hard start when cold or engine sits?

Tiny
CAR GUY 15
  • MEMBER
  • 2001 CHEVROLET S-10
  • 4.3L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 155,585 MILES
I have a hard start when cold or engine sits for more than 4 hours, blinking check engine light at highway speeds only, hesitation most of the time, a finicky fuel gauge, and a computer that will randomly reset itself every once and a while.
Sunday, January 18th, 2015 AT 8:31 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and check fuel pressure with a gauge. Auto parts rent it.
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Sunday, January 18th, 2015 AT 10:46 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,356 POSTS
I agree with HMAC300, it sounds like you have a weak fuel pump. Here is how to check the pressure guide.

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

the fuel pressure should be between 48 and 52 psi. HEre is how to change the pump out which is a common failure with these trucks. Check out the images (below). Please let us know what happens.
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Thursday, October 17th, 2024 AT 6:24 PM

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