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1991 Cadillac DeVille 4.9L Poor Idle Quality
Posted to GM Driveability on 1/25/1999

Vehicle in question originally came to us two weeks ago with a complaint of a rough idle when hot. Visual inspection showed oem cap, rotor, wires, and a fuel filter that had been installed backwards. We replaced those items, and now the car runs smooth. At...

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Message Closed w/FIX

car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CD53B7M
Engine4.9 L / 8 cyl
EmissionsUS Fed Emissions
SymptomsPoor Idle Quality
OccursOn Decel
Misc.Fwd, Mfd 9/96
Message Closed w/FIX

car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CD53B7M
Engine4.9 L / 8 cyl
EmissionsUS Fed Emissions
SymptomsPoor Idle Quality
OccursOn Decel
Misc.Fwd, Mfd 9/96