Question about Cars & Trucks
Fuel pump will not shut off.i changed fuel pump,fuel filter & fuel pressure regulstor and it didn't help
The Fuel Pump Relay is located: Under hood, driver side, front side of shock tower, rear of battery, mounted in fuse/relay box
Posted on Nov 08, 2014
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Posted on Jan 02, 2017
SOURCE: 1992 ford ranger
If this speratic problem seams to happen most when it's raining or damp, it is a shorting master contol that is to blame. The master control mother board is located on the firewall. Over time, the moisture seal on the cover fails and the motherboard gets damp and meny false signals are sent. This can even happen if the truck is off and key is not in the ignition (this mother board will alwas have power going to it as long as the battery is connected). A cheap way to check this is to remove the cover, put a plastic grocery bag over the mother board and use an small elastic band to close the open end, allow the wires connected to the mother board to go out the open end. If this solves the problem, replace the seals on the master control cover. Care should be taken as if there is ANY corrossion on the mother board, it will need to be replaced.
Posted on Oct 28, 2008
good morning to you and welcome to fixya.com. hope we can get you fixed here. just a couple of questions first? have you changed the fuel pump yet? if so where did you buy the pump from? your pump is actually building up to much resistence and is unable to overcome it in turn no power is getting to pump as needed. i have a grand cherokee with 230k so i love hearing that you have that many miles. lets keep you rolling. let me know and ill help you out.
Posted on Mar 07, 2009
SOURCE: Ranger fuel problem
There is a fuel cutoff switch on the passengerside floorboard, towards the right kick pannel, there will be a little red button on top of it, check to see if that is tripped, also when you turn the key to the on position listen to see if you hear the fuel pump prime up, just a short buzzing noise from the underside of the cab, if you dont hear it, that is a good indicator that your fuel pump maybe bad, i would also check the pressure at the fuel rail, chrome or black colored bar located near the fuel injectors.
Posted on May 05, 2009
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