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Adjusting idle

Tiny
LILPETE
  • MEMBER
  • 1994 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • MANUAL
  • 360,000 MILES
I have a 1994 Chevy S-10 2.2 liter. I replaced the stock motor with a Jasper engine a few years ago. I have about 30K miles on the new engine. As I put more miles on the truck, I have been having problems with the idle, I have replaced the Throttle Position Sensor, Oxygen sensor and have had my mechanic diagnosis it. No luck! The idle will change at times but will never back to where it was when I replaced the engine. It sounded fine for a long time, but it is getting worst.
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Thursday, February 17th, 2011 AT 9:20 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
The idle is set and controlled by the ECU, best to clean the throttle plate, check for vacuum leaks and clean or rep[lace the IAC, also a scan will show any unresolved fault codes, start here.

Mark (mhpautos)
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Thursday, February 17th, 2011 AT 12:17 PM

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