Question about 1985 Cadillac Eldorado

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Put a new fuel pump but there is no current on the positive wire and where is the fuse for the fuel pump located .

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There is a fuse box near the fenderwell under the hood that also contains the pump relay.

Posted on Apr 26, 2010

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1994 volvo 850, there is no current going to the fuel pump, pump fuse is ok and have put a wire to the alarm relay 50e, 50f but still there is no current going to the fuel pump.


have you done any work on the car or any accidents. anything could have happened but sounds like you have a bad ground or clipped wire check that. you might have to run a new wire to the pump from the fuse box. that is what i would do.

Oct 28, 2014 | 1994 Volvo 850

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1991 toyota 4runner efi fuse keeps blowing


Correct pump for the truck?
A blown fuse means there is too much current draw from the pump.
Why is the tough question.Pinched wire?
If the fuse does not blow,immediately,can you measure the current draw at the pump in put wire?

Be SURE to cycle the key on for 5 seconds,off for 2 and back on for 5 seconds 3 times! Prime the pump.
If not primed,properly the new pump may burn out.
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What if any and where is the 1997 Oldsmobile fuel pump switch location. Installed new pump and would not start. I am being asked if we turned on the switch? What switch?


The fuel pump is controlled by a fuel pump relay, and the relay is powered by a fusible link attached at the starter positive cable, and there is also an inline fuse between the fusible link and the relay. Check at the fuel pump connector at the fuel tank for current. When the ignition switch is turned on, engine not running, the fuel pump should receive current for about 3 to 5 seconds; then the ignition has to be turned off for about 10 seconds, and when turned to the on position should give power to the fuel pump again for a 3 to 5 second interval. If ther4's no power at the fuel pump connector the problem is either the relay or the wiring between the fusible link and the relay.

Jun 18, 2011 | 1997 Oldsmobile Achieva

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Does the 94 fleetwood broughams 5.7 v8 carry a crankshaft position sensor and if so where is it located. the vehicle wont start after it has been driven until the engine cools. replaced...


Sounds like fuel starvation to me, especially if the scenario repeats itself! Take out the fuel pump fuse, and put an ammeter (which measures current) in series with the fuel pump circuit, and start the engine ... then watch the current reading. Does it start falling off? If so, the fuel pump is losing pressure, starving the engine for fuel!

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Fuel pump fuse blown, what causes the fuse to burn?


Fuse's burn if a component in a system has an electrical failure wether it be permanent or intermittent or sometime electrical circuits have an electrical surge which can be caused by numerous things and the fuse will burn to protect the circuit. If your fuse is coninuously burning out then you need to do some investigative work. First I would locate the fuel pump relay and remove that then replace the fuse and see if it burns out, second if you can access it try to unplug the wiring to the pump and replace the fuse, third you should check the wiring going to the pump to see if there is damaged wiring. The last thing that may (but unlikely) be the problem would be the ECM that controls the system. If the first three fail you should try and have it properly diagnosed by good shop.

Dec 08, 2009 | 1998 Ford Windstar

1 Answer

1991 tracker I put in a new fuel pump relay. the new relay has power comming to teh relay the wire going to the fuel pump has no power. put the jumper wire in and the pump runs. Why won"t the power go...


probably becuase its faulty...try replacing it and go from there...or else there is another source of resistance in the circuit some where....also, check your fuses....a blown fuse will stop flow of current as well.

Nov 14, 2009 | 1991 Geo Tracker

1 Answer

I have a short in the wires for the fuel pump keeps blowing fuses when you move wires connected to the relay just put in a new fuel pump thinking that was the problem. where can i get a wiring diagram to...


The problem may actually be in the fuel pump relay itself. The windings of the relay which create an electromagnetic field when energized, may be shorted and/or creating a high current draw, thus blowing the fuel pump fuse repeatedly.

I hope this helps! :)

Nov 13, 2009 | 1992 Buick Century

2 Answers

No power on fuse of fuel pump chevrolet wt 1500 4.3 liter


it sounds like the fuel pump relay is bad. it should be located in the under hood fuse panel

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1 Answer

Blown fuel pump fuse


solution , find the reason why that circuit is drawing more current than the fuse can handle . possibilities include shorted wiring , bad fuel pump , bad relay . will require further testing .

Jan 01, 2009 | 1997 Ford F150 Regular Cab

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