Question about 1989 Ford Mustang

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Not gettin power to the fuel pump but is gettin power 2 the pig tail

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Use a test light or a digital meter,test for voltage on both sides of the pigtail.Power must go in and out the other side.If you have power on both sides of the pigtail then your pump is probably bad.See if you can put power and groung directly to the fuel pump,it will work if it is good,if not replace pump.

Posted on Jul 22, 2009

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You Have A Bad Fuel Pump if Its Getting Power To The Pig Tail At The Fuel Tank

Posted on Jul 16, 2009


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1 Answer

How do you fix wiring for 1988 ford ranger4x4 wiring to the fuel pump

Are you wanting to wire voltage or ground circuits? Remember, you have to deal with the fuel gage sending unit circuit or the fuel gage won't work.
The basics, if single wire dedicated circuit, leave a pigtail wire, both ends, as long as the problem is between the pig-tails, run a new wire, splice into pig-tails. The new wire can lay anywhere till you do some testing to see if it's going to work.
I short-handed this post a little. I wasn't sure exactly what you have going on?
Do want a wiring diagram?

Mar 24, 2016 | 1988 Ford Ranger

1 Answer

Fuel pump no power

old post
we check voltage at the pump cranking. "crank it"
FI fuse good, IG-coil fuse good.
if 11v at least then then DC power IS GOOD>
if less seen 4,5,6,7,8,volts i have.
then the power wires are rusty, or the pump is sucking way over 5amps. (spec)
seen bad pumps SUCK 10 or more amps, (all are bad)
if a 2 door a, these pigs fail.
all do.
behind the left rear tail light (off it)
there are 2 wires, there, to look at, fixed many.
the wire to body lug there black at 2pm is pump ground, its rusty right>?
then to the left and lower is the large connected, with a huge pink wire, that wire is PUMP. hot.
that connector pin will be rusty, bad . most do this
because water can get up there, and is bad thing there.
it can also fail at the center bumper conn.
and on top of tank pump connector.
i just named 4 places, and guess what there are more.

what I do is check fuel pressure if not speck
i check pump voltage, (across the 2 pins)
if not spec, voltage cranked , I measure current.
if at near 4amps, i work back. for voltage drop
same answer on every EFI car made.
do all this cranking on a dead engine car, my guess as to why you ask.

"fuel pump no power."
can mean?
pump dead, and no DC power to pump'
or can be?
?can fuel pump be bad, causing low engine power.????
now that be sure, as can 100 other things.
try to form a clear question after posting clear symptoms.

Jan 19, 2014 | 1992 Geo Tracker

1 Answer

Fuel pump aint gettin no power

Check the fuse for the fuel pump.

Dec 20, 2013 | 2002 Cadillac Escalade

2 Answers

1998 gmc jimmy 4 door 4x4 fuel pump is not getting power

check small 4 way connector at the pump if it looks burnt replace with "pig tail" wire harness . look at fuel pump ground connection on frame near gas tank filler. look for bad fuel pump relay ( very rare) . will engine run is starting fluid injected?

Sep 21, 2013 | Cars & Trucks

1 Answer

Fuel pump wont turn on and i just replaced it and the relay

you have a few of them there is a relay under the driver seat, then there is one above the ecm on the passenger side in the kick panel, the main harness is conneted to the rear light harness

Aug 13, 2009 | 1989 Ford Mustang

2 Answers

My fuel pump is not working but ther is power going to the pump and i just replaced the pump and relay

hope you used oe typ pump to many isuses with after market pumps so any way if you have power at pump what is voltage needs to be 12v at least pull hose see if you have fule coming out power the pump your self now if you got after market pump did you replace the pig taile with supled updated one should ben in box .if not need put new pig tail on hope this helps

Aug 13, 2009 | 1996 GMC Sierra

1 Answer

1992 firebird v-6 auto fuel problem

There is a fuse that is pig tailed from the positive lead to the battery. Check it. Also you can check to see if you have power to the fuel pump. Take your old pump, and put 12 volts to it, and see if turns on. If it does, then the pump was never the problem.

Oct 10, 2008 | 1992 Pontiac Firebird

2 Answers

Fuel gauge not reading gass level

the sending unit is made together as a fuel pump module.pricey change pig tail harness also

Aug 13, 2008 | 1996 GMC Sonoma

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