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Engine cuts out when warmed up

Tiny
SHERI LAMPARTY
  • MEMBER
  • 2004 PONTIAC GRAND PRIX
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
When the car gets up to temperature it wants to start cutting out wanting to shut off. If I turn the heater on it helps it from cutting out for minute or so.
Friday, May 7th, 2021 AT 1:59 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

This could be either the crankshaft position sensor where the signal is dropping out or it could be the ignition control module which is common.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

https://www.2carpros.com/articles/engine-stalls

I would remove the module and take it to a parts store and have it tested. It is a free service.

Roy
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Friday, May 7th, 2021 AT 3:49 PM
Tiny
SHERI LAMPARTY
  • MEMBER
  • 2 POSTS
Both of those sensors have been replaced.
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Saturday, May 8th, 2021 AT 3:24 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The ignition control module is not a sensor.

What other sensor beside the crank sensor did you replace?

Roy
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Saturday, May 8th, 2021 AT 5:22 AM

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