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Gremlin in my Jeep

Tiny
DIZZY
  • MEMBER
  • 1994 JEEP GRAND CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
I have a 94 grand Cherokee with a 4.0 L in it what would cause the fuel pump. Not to turn on right away it's a new pump and all the wires are fine I swapped relays and it has a new oil pressure switch in it I turn the key on and nothing but if I leave the key of for ten minutes it will turn on the injectors prim and it starts but won't when cold
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Wednesday, January 26th, 2011 AT 4:14 AM

2 Replies

Tiny
MECHMAN67
  • MEMBER
  • 36 POSTS
Check the ASD (auto shut down) and fuel pump relays for operation and corrosion on the terminals in the main power distribution box.
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Saturday, January 29th, 2011 AT 7:15 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,644 POSTS
Make sure there is power to the relay and that it is making it back to the pump.
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Thursday, March 17th, 2011 AT 6:44 PM

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