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My 1994 bronco fuel pump is not working, is there a relay i should check first before removing the fuel pump?

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Best thing to do is check voltage at fuel pump harness, have some one turn key on and off every 5 secon's, probe wire's at fuel pump harness, one of the wire's will have voltage for about 3 secon's, if you do fuel pump is getting voltage, some time while cranking engine and hitting gas tank with hammer at the same time, fuel pump will start working again, if it start's, you will still need to replace fuel pump or it will happen again, fuel pump is in fuel tank.

Posted on Aug 06, 2010

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2 Answers

Not starting which relay controls fuel pump


1994 ford Bronco was starting and running fine. My daughter drove it 3 miles to school that morning then a few hours later she went to start it and it would'nt start. The door chime and all the dome lights, lights on dash lite up as normal and when you turned the key to (start) position you could hear the fuel pump then it just would click and not turn over and start. Jumped the battery that didn't work. Had it towed home and tried a few more times that night to get it to start but no luck. Next afternoon went to check it out again and for the heck of it thought id try starting it. Would'nt ya know it..It STARTED right up? After checking Battery and solenoid..etc I thought it was the starter but now im not sure.

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1 Answer

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1 Answer

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Well if he caused a short in the electrical system it could be the eec relay it is located on the passenger side under the hood on the fenderwell. Some are marked with what they do there can be 3-4 relays on it, the relays look like a small box with a connector at the bottom, and quite a few wires coming out. the one for the eec relay should be in the middle it was on my fathers 88 bronco 2. the fuel pump relay is the same thing, there cheap to buy and can find them at the parts store they are known for failure, just replace it..

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1 Answer

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Hi..my name is Keith..and the 2 things that i know of...that will not let power go to the fuel pump is 1..the fuel pump relay being bad..or 2..that something has tripped the Inertia Switch...and it needs resetting..i hope this will help

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