Question about Cars & Trucks
95 Taurus 3.8 SHO wont start replaced everything fuel pump to big black relay is buzzing even new one im lost need help
Run tests. Fuel pressure correct? Spark at plugs when cranking? Fuel injector pulse working? Compression test?
Posted on Apr 06, 2015
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Posted on Jan 02, 2017
SOURCE: my 1989 Toyota p/u wont
I had this exact same problem in my 88 pickup. I replaced all relays and pumps to no avail. What i did was "hot wire" my fuel pump. Run a power wire from the battery of fuse panel to a switch, then from the switch to the positive wire on the top of the in-tank fuel pump. Its kind of inconvienient at first but you get used to having to flip the switch before you turn the ignition key. It also doubles as an anti-theft device if you place the switch in a hidden spot. Good luck, i know its a pain but it is the cheapest/ easiest fix. Please leave positive feedback if i was of some help.
Posted on Mar 30, 2011
Testimonial: "i was thinking that and am about to do that. thank you"
You said you baught a new pump, filter and relay, get a voltmeter or agitator and test each of the wires, if your not getting power to it then its probably a hot wire coming from your battery terminal or one of the wiring harnesses coming out of your firewall, you probably know that the fuel pump access panel is underneath the back seat so take it off, test the ground first with the car on then test each individual hot wire, if you find a faulty wire see if you can manually fix it, if not then run a hot wire from the source using speaker wire or something similar until it turns on for you at contact with the ran hot wire, just be sure that you do hav gas in the pump while testing wires just not enough to blow yourself up lol, otherwise you will burn out your fuel pump motor.
Posted on May 17, 2009
try cleaning the connector that goes to the fuel pump, sometimes they corrode on inside. If that does not fix, test the wires feeding fuel pump with a multi meter until the condition shows itself again, if voltage drops to zero or very low then wiring problem, if voltage is unchanged with problem and fuel pump is not working and connectors are all clean, try replacement of fuel pump.
Posted on Oct 09, 2009
Hello , fuel pump relay location is in the relay box by the radiator. The fuel psi regulator is on the fuel rail itself. The regulator looks like a small disk about 1.5inchs in dia. It will have a vacuum line running to it.
Posted on Jan 23, 2010
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