Fuel Relay Fuse

[pugsy]

The 30 amp fuse in the power box under the hood for the fuel relay keeps blowing for my 92 explorer. This happened about a week ago and my mechanic changed the fuel relay and the fuse. They tested it and said it was working fine - and it was for about a week. Now the fuse is blown again. I changed the fuse and tried to start it and it blew out the new fuse right away.
What's the problem?
Thanks!

 

[marragtop]

Sounds like you have short somewhere. You can try putting another fuel pump relay and fuse in, but the fuse will probably blow again.

 

[nascar_intimid]

I have the same problem and sometimes it's o.k. for a year, my mechanic ruffled the wires around on top of the gas tank in case there was a short up there as he checked the whole harness for this short problem and found nothing. just carry lots of extras...???

 

[pugsy]

ya...mine is the same. My mechanic can't find any shorts and the fuse wouldn't blow for him when it was in the shop. Seems like it blows at the worst times! I have a feeling the fuel pump might be going and is shorting out everyso often.

 

[BP_93explorer]

I had that same problem in my '87 Chevy. The guy I sold it to later told me that he added a toggle switch for the fuel pump. Just bypassed the fuse I guess. He never had problems with it again. Thats kinda the reason I sold it. Bums me out

 

[JStrider]

put a penny in it? or a paperclip?

would get you where your going prolly...

probably lots of reasons not to do that...

better to fix the problem and then the symptom...

 

[DeRocha]

Please don't by pass the fuse or you'll be in for quite a surprise... You either have a short in the wire harness leading to the fuel pump, or the fuel pump is old and worn.. The fuel pump like all electric motors relies on a magnetic field generated by the wire windings inside the motor. When a motor is over heated it burns some of the insulation off and little shorts develope.. So instead of using 10amps of power the fuel pump will need 11 to have the same performance... After time the fuel pump eventualy needs 30amp and bingo your fuel pump fuse is blown. This is a safty issue since the fuel pump and sending unit sits right in the fuel tank bathed by gas to keep it cool.. Since gas cools the pump it is a good reason to keep the fuel tank at 1/4+.