1999 Oldsmobile Aurora

1999 OLDSMOBILE AURORA
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LMG265
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1999 Oldsmobile Aurora V8 Front Wheel Drive

if i drive my aurora for then 30 miles, especially on humid or rainy days, it idles very high and seems to accelerate itself. If i stop the car the engine is idling so high that the car jumps forward despite the fact that my foot is pushing the brake all the way in. when i put the car in park, it idles extremely high, 4 or 5. usually when i shut it off and turn it back on it goes back to normal idle. when i am driving it seems like the throttle is stuck. it even accelerates up hills! no one can figure it out even experienced auto mechanics. please help.
Nov 19, 2009 at 8:54 PM
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ERNEST CLARK
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First, is your "Check engine" light illuminated? If so, then you'll have to have that scanned. The codes will give you a place to start.

If not, then you'll have to check all of your hoses for vacuum leaks. A severe vacuum leak will make your engine idle high without setting a code in your computer. Another thing that will make your engine idle that high is a failed sensor, such as Crank/camshaft sensor, MAP, MAF sensors. However, they'd most certainly set a trouble code.

Finally, it's possible that your computer itself is failing. That's not unusual on a 10-year-old car.
Jan 9, 2010 at 1:35 PM