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1989 Cadillac DeVille 4.5L Poor Idle Quality
Posted to GM Driveability on 4/5/2005 10 Replies

Car Idles a little on the high side [...] rpms but when put in gear it will idle around 750-850 rpm, no vacumm leaks, fuel trim 127, the problem is when you drive down the road at say 50 mph and let off the gas it will stay at 50 and very slowly drop. The TPS ...

10 Replies Received (View Replies)

  Related Documents & Media  1989 Cadillac DeVille

 
Message Closed w/FIX

car Vehicle Data

1989 Cadillac DeVille

VIN 1G6CD5156K
Engine4.5 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
EmissionsOBD1
SymptomsPoor Idle Quality
OccursAlways
Message Closed w/FIX

car Vehicle Data

1989 Cadillac DeVille

VIN 1G6CD5156K
Engine4.5 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
EmissionsOBD1
SymptomsPoor Idle Quality
OccursAlways