Question about 1996 Jeep Grand Cherokee

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Periodic stalling after running for awhile . when the key is turned on no power to the fuel pump. After setting a few minutes key is turned back on there is power to the fuel pump and starts

We have replaced the fuel pump and filter, fuel sensor and power sensor, and ignition switch Very perplexing, and ideas?

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  • Jeep Master
  • 3,218 Answers

The fuel pump only turns on for 2sec when key is turned on for a fuel pump prime. The fuel pump will turn back on during engine cranking. The most likely cause of stalling on this particular vehicle is a weak/bad crank sensor.

Posted on Apr 06, 2015

Testimonial: "had a mechanic tell us it is not a crankshaft position sensor problem, but something electrical because the fuel pump does not run when the key is turned on until it sets for several minutes."

  • paulmacintyre
    paulmacintyre Apr 06, 2015

    If you are comfortable with your mechanics diagnostics on the crank sensor, the next thing I would look at is the ASD relay and wiring to it

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