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1998 Jeep Cherokee Engine wont start

Tiny
MATMIL
  • MEMBER
  • 1998 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 116,000 MILES
My was sitting at a light when her jeep suddenly stopped running the fuel gauge said it was out of fuel but she had just put 10 gallons in the night before so she thought someone had siphoned it out so she put more fuel in it and it still says empty and wont start so I replaced the fuel pump sending unit since it had no fuel pressure and thats not the problem so I took the top off the fuel relay and it is not engaging when the key is turned on all the fuses are good and the relay is new and it has about 7 gallons of gas but still says empty I am truely stumped on this one Thanks for any help you can give me
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Monday, June 8th, 2009 AT 11:05 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Power the fuel pump direct from the battery and tell me what happened.
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Tuesday, December 17th, 2019 AT 7:07 PM
Tiny
MATMIL
  • MEMBER
  • 3 POSTS
I have powered up the fuel pump by manually actuating the relay that I took the cover off it has built up fuel pressure but still wont start something is blocking the current going to the relay when the is turned on
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Tuesday, December 17th, 2019 AT 7:07 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The computer might not be grounding the fuel pump relay to transfer power to the fuel pump
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Tuesday, December 17th, 2019 AT 7:07 PM
Tiny
MATMIL
  • MEMBER
  • 3 POSTS
How to you check where the ground is? I have read that the O2 sensor is the ground for the computer and the wires may have been shorted out but I have no wiring Diagram to see what wire or pin connector it may be. Thanks for the help
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Tuesday, December 17th, 2019 AT 7:07 PM

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