Question about 1997 Cadillac DeVille
MY 99 CADILLAC DEVILLE HAS DEVELOPED A PROBLEM WHERE THE ENGINE RPM'S WILL INCREASE FOR NO APPARENT REASON. WHEN IT DOES THIS, THE CAR WILL ACCELERATE WITHOUT ME TOUCHING THE GAS. WHEN I AM BRAKING, THE ENGINE RACES AND I HAVE TO STAND ON THE BRAKES. I USUALLY TURN THE IGNITION OFF AND RESTART THE CAR. SOMETIMES THE RPM'S WILL GO DOWN BUT SOMETIMES IT DOESN'T. WHAT COULD BE WRONG? IS IT SOMETHING IN THE
COMPUTER? PLEASE REPLY.
Throttle position sensor. or idle control sensor
Posted on Mar 26, 2010
If it only does it at idle your EGR valve may be dirty or bad. If it sticks open the idle will be rough and very erratic
Posted on Mar 30, 2010
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Posted on Jan 02, 2017
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