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Bucks and stops running, but starts back up

Tiny
EDDIES MOBILE
  • MEMBER
  • 1998 JEEP GRAND CHEROKEE
  • 4.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 196,000 MILES
Runs great for about 10-30 minutes then just sputters and jerks and cuts off/looses power when pushing gas pedal to floor, but starts back up and runs rough. I replaced ckp sensor and cam sensor at distributor and it still cuts off after 10 minutes of driving. I hooked up a fuel pressure gauge and drove it around for 10 to 15 miles and it didn't cut off one time. Thought I might have had air pocket in the fuel system but it did the same thing a day or two later. Fuel pressure was reading 42-50 psi. This has me confused. Help please

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Tuesday, June 24th, 2014 AT 11:23 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Shold be 44.2 -54psi might below at 42 try replacing fuel filter it might fix it and clean throttle plate on both sides and iac hole with choke cleaner.
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Tuesday, June 24th, 2014 AT 12:38 PM
Tiny
EDDIES MOBILE
  • MEMBER
  • 2 POSTS
I went back to check my basics on this jeep; found no codes or vacuum leaks. But did find a loose connection at MAP sensor; unplugged reconnected; problem solved. Thanks eddies garage
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Saturday, July 5th, 2014 AT 10:06 PM

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