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Know that in most cases the fuel tank must be off the vehicle and lying on the ground so that you can remove the fuel pump. A few cars have a door in the floor of the vehicle that allows access to the fuel pump, but not many.

----------------VCM Metal Box IDS V81 JLR V132

Posted on Dec 04, 2012


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Posted on Jan 02, 2017

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SOURCE: 1989 mercury Grand Marquis fuel system

The fuel pump relay is under the hood in the MAXI fuse box, it is a black box with a huge wiring bundle comming out of it.

Posted on Sep 04, 2008

SOURCE: fuel pump relay location on a 1990 mercury grand marquis.

check the fuse .if the fuel pump was bad you blew the fuse . there is a inertia switch in the trunk or under the dash you could check . push the red button to reset relay should be under the hood in the fuse box check your book if you have one.

Posted on Nov 19, 2008

  • 783 Answers

SOURCE: emergency fuel shut off switch for 1992 mercury grand marquis

It is in the trunk I can remember which side on a 92 but it will be behind the side trim panel almost straight down from the trunk hindge.

Posted on Feb 21, 2009

  • 1 Answer

SOURCE: 1993 Mercury Grand Marquis

how can i tell if the relay is bad i got a new fuel pump

Posted on May 05, 2009

  • 232 Answers

SOURCE: 2001 Mercury Grand Marquis hesitation and jolting from 35-45 mph

Sure, the more the throttle and the longer its open the more gas is being injected so if the spark is not there it will spotter. I think you have nothing to loose with an ignition tune-up. It'll be more economical than taking it to a mechanic and still ending up with the same problem. You should change the fuel filter also it could be clogged and there is'nt enough fuel delivered at these speeds. You can also try a fuel injector cleaning solution the kind you pour in the gas tank. This might work for you.

Posted on May 19, 2009

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On 1999 grand marquis, cut fuel pump assembly wires 3. On new one, the wires are different colors. How can i find out how to match them up

Match the location of where each original color goes to the same location on the new pump regardless of color and connect them. GOOD TO GO!

Dec 18, 2016 | 1999 Mercury Grand Marquis

1 Answer

Where is the fuel pump relay on a 1999 grand marquis the car will not start car started wit starter fluid so its not a ignition prob the car did start wit a jump wire on the fuel pump shut off switch

The fuel pump relay is in the powerbox on the drivers side of the car. It can be in a relay trio which is hung behind the powerbox and has a slide out access to the relays inside or it can be inside the big powerbox. Usually the cover has the relay name and position embedded in the plastic.

Apr 24, 2015 | 1999 Mercury Grand Marquis

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1999 mercury grand marquis electrical problems

check the ground frrom neg batt to frame. clean connection and tightn it and make sure the batt cable clamps r tight n still good

Feb 28, 2013 | 1999 Mercury Grand Marquis

1 Answer

1999 mercury marquis wont start, turns over fine, think its the fuel pump, not sure.

Check the fuel pressure at the injector rail.Or hook it up to OBD II code reader, which should give the average fuel pressure.
Do you hear the fuel pump run for a second or two when you first turn the key to `ON' position? That means your fuel pump reset hasn't tripped(for collision purposes,but sometimes needs reset).
When all else fails, go to Ford and they will hook it up for 50-70 bucks and tell you what is wrong.
If you can give more details, post back and let us know. don-ohio (:^)

Nov 02, 2011 | 1999 Mercury Grand Marquis

1 Answer

I just replaced a fuel pump on a 1999 mercury grand marquis, car still wont start thinkin it might be fuel pressure regulator but unsure of where its located

have you check if the pump is actually working and did you change the full filter if so there is a full relay that's only if the pump is not working

May 30, 2011 | Mercury Marquis Cars & Trucks

1 Answer

Where is the fuel pump located in a 99 Grand Marquis

its in the fuel tank, there might be access under the carpet in the trunk, but likely you'll have to remove the tank to get to it

Sep 18, 2010 | 1999 Mercury Grand Marquis

1 Answer

Replace fuel pump on a 1999 mercury grand marquos

you need to remove the tank. the fuel pump is inside about 6-8 bolts. the big pain is the straps that hold the tank in try not to bend them at all.

Jul 03, 2009 | 1999 Mercury Grand Marquis

1 Answer

Wiring the fuel pump

THIS 1994 Mercury Grand Marquis Fuel Pump Wiring Diagram41873503.gif Mercury Marquis Fuel Pump IS A 94, BUT IT IS THE SAME FOR BOTH YEARS.

Aug 26, 2008 | 1993 Mercury Grand Marquis

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