1992 Jeep Cherokee Fuel pump shut down

1992 JEEP CHEROKEE
160,000 MILES • 6 CYL • 4WD • AUTOMATIC
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RIVERMISTRANCH
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  • 1 POST
Fuel pump quit. I replaced the fuel pump, filter, and cleared the lines. Still no fuel. I want to know what sensors, switches, etc. have the ability to shut my fuel pump off?
Apr 18, 2009 at 2:27 PM
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JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
Hello,What testing have you done? Any trouble codes? With the engine cranking, do you have spark at the plugs and injector pulse? With key on, no crank, is there fuel pump prime? Did you ever check for fuel pressure?

Possibilities--fuses, fuse circuits--voltage and ground circuits--fuel pump relay-- fuel pump ballast resistor bypass relay-- cam sensor--crank sensor--wiring circuits to everything above.

Check for trouble codes, do some testing.
Apr 18, 2009 at 3:04 PM
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CRZYDRVR
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  • 432 POSTS
Another thing to have checked out is the automatic shutdown relay, and the wiring in that circuit.
Apr 22, 2009 at 8:42 PM
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