Question about 1991 Ford Explorer

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EEC relay fuse keeps blowing id put a new fuse in the truck it would run for about 10 seconds then blow the fuse again.

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There are 3 relays mounted below the fuse box .
The green I believe is fuel pump relay and the brown is EEC. The third relay is for the A/C WOT.
It is possible the wiring is shorted, check there, it is also possible you have a bad fuel pump.
Please let me know what you find.

Posted on Feb 07, 2010

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Posted on Jan 02, 2017

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1 Answer

How do I stop my efi fuse from blowing repeatedly. Just changed the fuel pump and now that fuse keeps blowing.


What about your fuel rail regulator, which is in the tank with the fuel pump on some cars? Does it have a pressure switch/sensor that isn't telling the engine control module to shut the pump off when the rail pressure is obtained? If you turn the vehicle to on (not start) and the pump runs more than a couple seconds, like until the fuse blows, it could be either a stuck pump relay or worse, the fuel pump control signal. Pull the pump relay, add a new fuse and see if the pump runs with the key in the on position again, which it shouldn't. If it doesn't run, the issue is either the relay, or the control signal to the relay that is keeping the pump on all the time, causing the fuse to blow.

It sounds to me like the pressure is going to high and stalling or slowing the pump causing excessive current from the motor and blowing the fuse. If that's the case your old pump might not have been the problem. How's the fuel filter? That's in line with the fuel line to the fuel rail?

You don't have to answer the questions, just look into them for your own peace of mind.

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Ecmb fuse keeps blowing on my 99 s-10 put new fuel pump in about a month ago and worked great since then but today it shut off and blew the fuse again not sure what to look for.


Well that circuit powers the memory for the computer as well as the fuel pump relay and other things.
You might be able to pull the pump relay and see if the fuse still blows, it will be tough to find the problem if it is at random times.
You'll probably need a shop manual to get the wiring diagrams to trace it.

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1 Answer

Ford explorer eec relay


Try a new relay first. This may not be good news if that does not work. If you can find the EEC (computer) and unplug it, then replace the fuse-if it blows you have another cheaper part on the circuit thats bad.
If the fuse does not blow, then the EEC must be shorted.
If you have to replace the EEC you may find a kindly dealer with a cash-for-clunker sitting there to violate. Salvage yards have them, Ebay sells them. I have seen them at swap meets for $20. They are a high price part even rebuilt at Dealers or autoparts stores.

Aug 24, 2009 | 1991 Ford Explorer

1 Answer

1991 ford ranger 3.0 eec relay fuse keeps blowing fuel good no spark.Changed the distribitor, changed the ignition module.


I understand that there is a relay box under the hood with 3 relays. Which is which I don't know. However if you are blowing the fuse TO the ecc relay, then the relay must be bad. This relay controls the spark.

Jul 25, 2009 | Ford Focus Cars & Trucks

1 Answer

My eec relay on my 1992 ford exporler keeps blowing its a 30amm relay the car run for ten to twenty seconds then the relay blow car then the car cranks over but does not start any help would be apprecited.


There is a short some where in the circuit. Get a Haynes manual part # 36024 covers 91 thru 2000 it will tell you a lot of info on troubleshooting the wiring. Good luck

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1 Answer

EEC fuse: 1992 ford explorer


sounds like you have a bad relay that is shorted out or you might have a bad fuel injector shorting out fossible fuel pump wireing short do some probing aroun with the multi meter try to find direct short , use the process of elimination .
now let me see does your truck start up and run then fuse blows? is the fuse the correct amperage check your owners manual to see how long does it run before blowing fuse ? when its running is it running smooth while is running?

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2 Answers

E.E.C fuse keeps blowing in 1991 Ford Explorer


sounds like you got a short try tracing harness to see if theres anything visible

May 26, 2008 | 1991 Ford Explorer

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