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1989 Chevrolet S10 4.3L High Idle
Posted to GM Driveability on 12/10/2005 12 Replies

This truck has a high idle. Came in with O2 dead, replaced O2 sensor and now has switching O2 and closed loop. Found IAC unable to extend, replaced IAC motor. I can plug the IAC bypass and achieve a perfect idle, as low as 500 rpm's or even less with no vacuum...

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  Related Documents & Media  1989 Chevrolet S10

 
Message Closed w/FIX

car Vehicle Data

1989 Chevrolet S10

VIN 1GCDT14Z0K
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
SymptomsHigh Idle
OccursAlways
Message Closed w/FIX

car Vehicle Data

1989 Chevrolet S10

VIN 1GCDT14Z0K
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
SymptomsHigh Idle
OccursAlways