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1987 Chevrolet R20 Suburban Custom Deluxe 5.7L High idle
Posted to GM Driveability on 2/7/2003 14 Replies

This truck just came in from a dealership, they had it for a few months. The problem is this. After the truck is warmed up, when it's dropped into any gear the engine RPM drops , the IAC counts start to rise until the engine reaches 750 rpm. This is the spec. ...

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  Related Documents & Media  1987 Chevrolet R20 Suburban Custom Deluxe

 
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car Vehicle Data

1987 Chevrolet R20 Suburban Custom Deluxe

VIN 1GNGR26N4H
Engine5.7 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFI / TBI
EmissionsUS FED
SymptomsHigh Idle
OccursAlways, Hot, Idle
Message Closed

car Vehicle Data

1987 Chevrolet R20 Suburban Custom Deluxe

VIN 1GNGR26N4H
Engine5.7 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFI / TBI
EmissionsUS FED
SymptomsHigh Idle
OccursAlways, Hot, Idle