Engine cuts out when warmed up

2004 PONTIAC GRAND PRIX
180,000 MILES • 3.8L • V6 • 2WD • AUTOMATIC
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SHERI LAMPARTY
  • MEMBER
  • 2 POSTS
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.
May 7, 2021 at 6:59 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 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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May 7, 2021 at 8:49 AM
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SHERI LAMPARTY
  • MEMBER
  • 2 POSTS
Both of those sensors have been replaced.
May 7, 2021 at 8:24 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
The ignition control module is not a sensor.

What other sensor beside the crank sensor did you replace?

Roy
May 7, 2021 at 10:22 PM
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