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1990 Cadillac Seville 4.5L Poor Idle control
Posted to GM Driveability on 1/21/1999

The affected area is ISC control. When vehicle is going down road and decelerated the rpm's stay around ([...]) and never decrease till you started braking. Idle will not settle down till you come to a complete stop and wait for a second. It will finally settl...

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car Vehicle Data

1990 Cadillac Seville

VIN 1G6KS5337L
Engine4.5 L / 8 cyl
EmissionsUS Fed Emissions
SymptomsPoor Idle Control
OccursOn Decel
Message Closed

car Vehicle Data

1990 Cadillac Seville

VIN 1G6KS5337L
Engine4.5 L / 8 cyl
EmissionsUS Fed Emissions
SymptomsPoor Idle Control
OccursOn Decel