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Car shuts off while driving

Tiny
JENBENJONES
  • MEMBER
  • 1999 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Car starts with no issue and drives, but after a couple blocks it'll start to run rough and then the rpm will go up and down and then the car will start to shut down and then I can't restart it. After a couple hours I can start it and keep doing the same thing.
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Thursday, December 12th, 2019 AT 6:26 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

It sounds like an issue with the crankshaft position sensor. When they start going bad, heat causes them to fail. As a result, you need to allow it to cool for it to restart.

Take a look through these links. The second link shows common symptoms. See if they mirror what you experience.

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

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

_________________________________

Let me know which v6 you have and I can get directions specific to your vehicle.

Let me know if this helps

Joe
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Thursday, December 12th, 2019 AT 5:55 PM

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