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2000 Cadillac STS Repair Question


Topics covered: Engine, Rpm, Check engine light.
Mileage: No information provided.

Asked on February 24, 2010

2000 Cadillac STS Car Talk

Engine Performance problem
2000 Cadillac STS V8 Front Wheel Drive Automatic 144114 miles

once i've drivin my car around for awhile in its get real hot i put the car in park and it jerks real hard and my rpms go way up
Avatar Asked by Gilmer

Answer

Replied on February 24, 2010

Way up, as in around 1500 rpm? Check for a vacuum leak in the intake plenum boot. This is often not visible, it occurs around the bottom side of the boot, it splits. You can also get a check engine light, and lean codes for both banks P0171, and P0174.

Tiny Answered by factoryjack (expert)
4,285 answers provided