Fuel Pump Fuse Keeps Blowing 20 Amp, What Could Be The Problem?


10 Answers

eugene hunt Profile
eugene hunt answered
Most likely culprit is a wire shorting out to the body of the car and blowing the fuse. Get under the car and follow the wiring bundle from the front to the back, look for any place where it might be rubbed raw or the insulation scraped off the wire. If you can't find anything there, look where the wires come through the firewall for shorts to the firewall. If nothing there, look to see if someone has connected a stereo or some other electrical contrivance to the wiring harness (bundle), either under the dash or under the hood, the 20 amp fuse may just be overloaded from too much stuff tied into the circuit. If nothing there, try a 30 amp fuse and look carefully for any signs of overheated wiring, smoke or strong burnt odor, be very careful doing this and have a fire extinguisher handy. Last resort, pull the gas tank and unplug all the wires on the tank and see if the fuse still blows, if it does, then the problem is in the wiring, if not, then replace the in tank fuel pump, although these usually just stop working, they don't normally blow fuses. Be really careful when working with gasoline and electricity, don't make a spark at the wrong time or in the wrong place or you will have a serious situation. Best thing is to check it out as far as you feel comfortable and then take it to a professional. Good luck.
Rena Chisholm Profile
Rena Chisholm answered
Usually when the fuel pump fuse keeps blowing, it is because the fuel filter is clogged or the fuel pump is bad.
Shayne Hutcheson Profile
It could be the actual fuel pump itself that is causing the fuel pump fuse to keep in blowing. The fuel pump relay could have high resistance somewhere, or indeed is not relaying the fuel at a constant and consistent level.

If this is the case, you will need to take your vehicle to a mechanic to have it replaced.
Anonymous Profile
Anonymous answered
20 amp
Anonymous Profile
Anonymous answered

I just replace the fuel pomp module under the spare tire and burn the 20 amp fuse.

Anonymous Profile
Anonymous answered
Check your wiring for shorts to ground. Disconnect the fuel pump and put in a fuse see if it blows. If it does then there is a wire harness short to deal with.
Anonymous Profile
Anonymous answered
Anybody please help. I have a ford ranger 92 XLT 2.3L. The fuel pump relay, what Amp is it.
Sincerely Jim

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