Throttle body

Tiny
TERRY KAHN
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 2.2L
  • V6
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
At times it seams to starve of fuel, let up on gas and it will even up. But it runs smooth.
Saturday, June 10th, 2017 AT 9:57 AM

4 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Check engine light on?

Last time it had a fuel filter?

The Medic
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Saturday, June 10th, 2017 AT 11:01 AM
Tiny
STEVE W.
  • MECHANIC
  • 12,963 POSTS
First thing would be to check the fuel pressure, low pressure due to a failing pump or clogged filter can cause this. You can "borrow" the tools to test the pressure at many auto parts stores. You should have between 60-65 psi.
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Saturday, June 10th, 2017 AT 11:03 AM
Tiny
HARRY P
  • MECHANIC
  • 2,293 POSTS
I am with Steve, check the fuel pressure. Having had two Blazers with the same fuel pump as yours, I have replaced both of them. And they went bad right at the 150,000 mile mark. Also, they are a known common problem with S-Series trucks (Blazers, Jimmys, S-10s, etc).
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Saturday, June 10th, 2017 AT 2:47 PM
Tiny
RENEE L
  • ADMIN
  • 1,257 POSTS
Hi TERRY KAHN,

If you are interested in checking your vehicle's fuel pressure yourself here is a helpful link to an article from this site with step by step instructions and pictures explaining the process of checking the fuel-system-pressure-and-regulator.

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

If you need further assistance please come back to the site we are here to help.

Thank you for visiting 2CarPros.com.

Kindest regards,

Renee
Admin
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Saturday, June 10th, 2017 AT 2:56 PM

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