Nwettlaufer

I am haveing fuel pump related problem. I replaced the relay and it started. It ran for a week then quit again. I replaced the relay again it started then died. I dropped the tank because the harness was pinched and possibly grounding out. The shop was warm and the jeep started right up drove home turned it off and it wont start fuel pump not functioning

Gee oh Dee

Tell us all about the vehicle first, year, motor, etc. All the history if possible, as well.

How did you confirm the fuel pump isn't working?

The most common no-start cause is the Crank Position Sensor.

Check and see what fuel pressure is at the rail. Also check for GOOD spark.

Nwettlaufer

Its a 93 grand cherokee 4.0 i suspected the fuel pump because when push down on the fuel rail pressure valve no fuel shoots out with the key on i have not tried the crank sensor yet. Would that cause the fuel pump to not work

Bustedback

About twenty years of service, replace the pump and filter.