Question about 2000 Jeep Grand Cherokee

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4.7 fuel pump 20amp fuse keeps blowing

As above problem.

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It sounds as if the fuel pump is at fault, have you had it checked over?

Posted on Oct 22, 2008

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2002 sebring keeps blowing 20amp starter and fuel fuse


When does the fuse blow? As soon as it's replaced or when you try to start the car? Take the small wire off the starter solenoid. This will separate the fuel pump from the starter solenoid. With a new fuse in turn the ignition switch to the start position. Does the fuse blow? If so, then the fuel pump and/or the wiring to it has a short. If the fuse doesn't blow then the starter solenoid or the wiring between the ignition switch and the solenoid has a short.

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Why does the 20amp fuse for the fuel pump keep popping?


rodeo or rodeo SPORT?
2.2 or 3.2 engine> not even a cylinder count....
i wish all problems were this simple. (easy with ammeter)
the load is SHORTEd, the fuse saved the fire.
x2 all above answers
but keep in mind some fuses run more that one thing, ill check.

20amp fuse (no label) no engine option stated, must be the 6ve1, v6 twin cam.
fuel systems vary by (engine type)
not the 3.5L vin Y engines. 2.2 or 3.2L>?
fuse EB12, Engine bay fuse blows, 20a, fuel pump.

so pull these conn.
H-15 first
then if ok, (no blow)
H-25: if not blow now the pump is shorted
or the wire from H25 to F1 is ground to the frame.
wire inspections are first. on that path.
i use a EB12 , circuit breaker and mag ammeter to find this fast.
ask.



2.2L
25112994-qvzg5ivccfb4p0rjgycwet1k-2-0.jpg

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The fuel pump and coil are on two different circuits.
The fuel pump is on the 20amp ECM fuse and the coil, ignition module, and injectors are on a 20amp fuse #10. But the ECM fuse could keep the coil and injectors from working.
You would need to test the fuses in the box in the engine compartment, and the fuel pump relay and coil for voltage and ground. The pump relay is grounded by the computer for 3 seconds when the engine is cranked.

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1 Answer

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There's a short to ground in the circuit, probably in the harness at the tank or inside the tank. You could unplug the connector at the tank and recheck it.

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The 20amp ga/idle fuse powers a hot fuel module which powers the oil pressure switch, the fuel pump relay, and the fuel gauge in the tank.
Any of the four components including the fuel pump can blow the fuse.

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Fuel pump fuse keeps blowing on my 95 Crown Vic


Using a smaller fuse should make the problem happen more often.
A mechanic would unplug the pump harness at the tank and check the circuit for high resistance or a short to ground.
If nothing is found in the harness, I would suspect the pump in the tank.

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2000 eclipse 4cylinder 20amp fuse keeps blowing to the fuel pump


A wire going to that fuse may be grounding out somewhere in the car causing fuse to blow. Other than that Im not really sure what to tell you.

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20amp fuse in black box keeps blowing


dear,


The fuse ecm b it tied to the fuel pump, PCM, and VCM.
Fuel pump could have an internal short
check it by the way...

regards,

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