1993 Cadillac Deville Learching

Tiny
SIMON7007
  • MEMBER
  • 1993 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 126,000 MILES
1. When you let off the gas the car increases speed?
2. When car is hot starter does not work?
Tuesday, July 7th, 2009 AT 1:45 AM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
The increase in speed is what is known as a sail on. Typically, it is a result of something being changed, or altered resulting in the idle not being learned. Had the ECM, throttle position sensor, or idle speed control motor been replaced recently? It needs the minimum air rate/tps adjustment and idle learn procedure performed to correct. If you can verify a signal on the purple wire at the starter, when it is failing, you need a starter.
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Tuesday, July 7th, 2009 AT 10:33 PM

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