2002 Cadillac Deville

Tiny
DEAFMANOK
  • MEMBER
  • 2002 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 135,000 MILES
My cars stalls about once a week. BUT only at stop lights or stop signs. I suspect the idle control valve is unstable. Or the throttle postion sensor is acting up. How can I tell which it might be. I did clean the throttle body and still stalls. NOTE: once it stalls it is a bit hard to start unless I press on the gas just a little. Then when it starts, it is not a problem for another week. Also it only stalls shortly after starting the car on the morning OR when I start the car and go home and it ALWAYS stalls at stoplights in LESS THAN 5 mins. It never stalls when the engine is hot ( say running over 10 minutes). MANY THANKS !
Wednesday, September 22nd, 2010 AT 8:24 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
The intermittent nature of the failure is going to make it very hard to confirm anything. Even with a high grade scan tool, it would be hard to spot a glitch that rare. I would suggest changing the IAC as that is likely the problem.
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Wednesday, September 22nd, 2010 AT 9:31 AM

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