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Why would engine stop running/firing after warming up?

Tiny
PHILLIPAUSTIN
  • MEMBER
  • 1997 JEEP GRAND CHEROKEE
  • 167,000 MILES
After warmed up(10-20 mls) my in line 6 backfires then shuts down completly. Then will not fire up till it cools down(about 20 min or so)It does NOT overheat or seze up. Is There a part( ie fuel/electric)That can go bad and cause this? I am very mecanicly inclined, but it has me stumped. I would VERY much appriciate any help you could provide since I am on a very tight budget.

Thank you

Phillip
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Tuesday, September 27th, 2011 AT 5:44 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Crank sensor is a common failure but also, you need to have the fuel pressure checked as well to make sure the pump is not failing when it gets hot.

Roy
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Tuesday, September 27th, 2011 AT 5:47 PM
Tiny
PHILLIPAUSTIN
  • MEMBER
  • 3 POSTS
Than you 4 your reply, I just had the cam and crank sensors replaced!Lol. The fuel pump is in the engine compartment? (I thought it was in the tank). How would it get warm?
Thank you again
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Tuesday, September 27th, 2011 AT 6:00 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Fuel pump is in the tank and is an electric motor that generates heat when it is running.

Roy
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Tuesday, September 27th, 2011 AT 6:04 PM
Tiny
PHILLIPAUSTIN
  • MEMBER
  • 3 POSTS
Thank you I will check it out now.
Have a great day
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Tuesday, September 27th, 2011 AT 6:21 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You too
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Tuesday, September 27th, 2011 AT 6:23 PM

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