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1990 Cadillac DeVille 4.5L Poor Idle Quality, Surge, Misfire
Posted to GM Driveability on 4/14/1998

Vehicle will idle rough (like a misfire) at stop lights. When throttle is press to raise idle the problem goes away. It can also be felt sometimes under steady throttle. Once also while accelerating it was severe but cleared up when throttle was pressed to wid...

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car Vehicle Data

1990 Cadillac DeVille

VIN 1G6CD55333
Engine4.5 L / 8 cyl
SymptomsPoor Idle Quality, Surge, Misfire
OccursUnder Load, Cruise, Idle, Intermittently
Message Closed w/FIX

car Vehicle Data

1990 Cadillac DeVille

VIN 1G6CD55333
Engine4.5 L / 8 cyl
SymptomsPoor Idle Quality, Surge, Misfire
OccursUnder Load, Cruise, Idle, Intermittently