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1988 Cadillac DeVille 4.5L Poor Idle Quality
Posted to GM Driveability on 8/9/2004 4 Replies

This car has a hight idle about 2,500 to 3000 we replaced a broked IAC motor and adjusted the TPS. one screw is broken off sot is hard to set but it is at .50 volts with the IA retracted. The car will idle perfict for about 8 to 10 miles then it races and will...

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car Vehicle Data

1988 Cadillac DeVille

VIN 1G6CV115KJ
Engine4.5 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / DFI
EmissionsUS FED
SymptomsPoor Idle Quality
OccursIdle
Message Closed

car Vehicle Data

1988 Cadillac DeVille

VIN 1G6CV115KJ
Engine4.5 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / DFI
EmissionsUS FED
SymptomsPoor Idle Quality
OccursIdle