Gremlin in my jeep

1994 JEEP GRAND CHEROKEE
200,000 MILES • 6 CYL • 4WD • AUTOMATIC
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DIZZY
  • MEMBER
  • 1 POST
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
Jan 25, 2011 at 8:14 PM
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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.
Jan 29, 2011 at 11:15 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Make sure there is power to the relay and that it is making it back to the pump.
Mar 17, 2011 at 11:44 AM
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