1989 Chevy S-10 Idle Problems

Tiny
ANGER
  • MEMBER
  • 1989 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • MANUAL
  • 125,000 MILES
89 Chevy S-10 2.5L. I have been having idle problems and can't figure out the problem. I replaced EGR valve but wasn't sure what washer # to put in. I put in #26 please advise. In addition, changed plugs, thermostat, checked all vaccum lines and replaced as necessary. New PCV valve. O2 sensor and fuel filter. When I start it, it starts cold no matter the weather. Idles very high and sometimes runs normal after 5 min, and sometimes idles so low it won't stay running without throttle. The Service engine soon line is intermittent. Please help if you can.

Thanks
Tuesday, March 18th, 2008 AT 9:44 AM

2 Replies

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Try cleaning the throttle body out with throttle body cleaner. There would be a possibilty that some carbon could have built up inside
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Tuesday, March 18th, 2008 AT 10:03 AM
Tiny
JORDACKI
  • MEMBER
  • 2 POSTS
I have tried this on my 87 chevy s10, and it helps, but it didnt solve the problem.
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Tuesday, April 1st, 2008 AT 1:55 PM

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