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Car shuts off at idle

Tiny
BANES
  • MEMBER
  • CADILLAC STS
1998 Cadillac Seville STS 91,000 miles. My car shuts off when I'm at a stoplight or idling in traffic. I turn the key and it starts right up but will happen again a couple of more times that day. I noticed this happens mostly after it rains or snows outside. But it has happened other times too. The car drives fine and no loss of power or anything, no smells, no weird sounds. The radio and lights still work when this happens. No trouble codes have come up and the check engine light hasn't come on. I was told it could be the idle speed control sensor or crankshaft position sensor, but i'm looking for a second opinion.
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Saturday, March 24th, 2007 AT 4:30 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Does it run rough at idle? Is it showing the check engine light? And when was the last tune-up?
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Tuesday, March 27th, 2007 AT 3:10 PM
Tiny
THOMASTRON
  • MEMBER
  • 1 POST
Did you ever find a solution. I'm not sure what the issue is, but I might just swap a new ECU in since its cheap and I don't have any other ideas.

It's weird because it runs perfectly and it when it shuts off it's smooth. It's not like it's dying or anything.
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Wednesday, April 23rd, 2008 AT 3:31 PM
Tiny
LEO90D
  • MEMBER
  • 1 POST
I have a 1998 cadillac deville with the same exact problem seems to be a common occurrence. So far we have changed the both the crank shaft sensors and the fuel filter but that has not fixed the problem.
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Sunday, November 11th, 2012 AT 10:01 AM

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