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1997 Cadillac STS Engine Idle

Tiny
WOLVES11
  • MEMBER
  • 1997 CADILLAC STS
  • V8
  • FWD
  • AUTOMATIC
  • 137,000 MILES
My vehicle's idle will increase as I drive the car. If I shut off and restart car it will fix the issue temporarily, but start to increase again. The car has gone over 3000 rpm. Car runs and performs fine besides this problem, except heater blower seems to have quit also around same time
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Tuesday, October 21st, 2008 AT 8:21 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,310 POSTS
Hi:
Check the fuses for the blower motor. Let me know if they are good. Also, the engine sounds like it could be a Throttle position sensor (TPS) or the Idle Air Control valve (IAC) I recommend that you have the computer scanned at a nationally recognized parts store. Most will do it for free, and it may identify the problem.

Let me know what you find in both cases.

Joe
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Tuesday, November 18th, 2008 AT 1:39 PM

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