I hope some one can help with this. I have a 1989 bronko, 302 engine. The fuel pump relay has fried twice. After I replace the relay it seems everthing is fine. But after running for a while the fuel pumps do not shut down even if the key is out of the ignition!!! This fries the relay again.
89 Bronko, Fried Fuel Pump Relay
Started by
Guest_ratmrage_*
, Mar 03 2004 04:42 AM
4 replies to this topic
#2
Guest_Gunner_*
Guest_Gunner_*
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Posted 03 March 2004 - 09:47 AM
ok first help is it is spelled bronCo. j/k now it sounds like a simple bad fuel pump. hopefully for you it is the exterior fuel pump and not the in tank. i took the outside fuel tank off and put an aftermarket fuel pump that attaches to the frame and not the tank. i got a couple of extra MPG's out of it to.
#4
BLADE262US
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Posted 03 March 2004 - 11:12 AM
The contacts in the relay are welding together due to the excesive amp draw due to a fuel pump going bad . If you have access to a dc amp clamp you can check the amp draw on both with it running and the one that is very high will be the one you have to replace . Hope this helps also a very clogged fuel filter will cause the amp draw to go way up because the pump has to work alot harder to force the fuel through the filter . 
#5
Guest_Gunner_*
Guest_Gunner_*
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Posted 04 March 2004 - 04:19 AM
yes yes yes blade is good that is what is happening if it is a bad fuel pump it is because you leads have siezed together and now you are always drawing power to it. get your self a new filter and it should fix the problem.
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