Question about Mercury Marquis

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Not getting any fuel to carb.

I have a 1985 Mercury Marquis with two fuel pumps one in the tank and the other on the side of the frame. Fuel pump in tank pumps real good the one on the side of the frame will not pump when hooked to the one in the pump. I can take it off the frame and hot wire it and it will pump. put it back on and hot wire it and it will not pump. any help

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  • 21,949 Answers

Change it, windings down

Posted on Nov 24, 2008

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Repacing fuel pump on 2000 mercury grand marquis


All Fuel Pumps are inside the fuel tank

Have to drop the tank down & remove pump
from the top

Been that way for 25 years

First you have to diagnose the real problem
Can't assume the pump is bad

Jan 11, 2013 | 2000 Mercury Grand Marquis

1 Answer

Where is the fuel pump located and how do you replace it on a 2000 grand marquis


On your 2000 Mercury Grand Marquis 4.6L SFI , the Fuel Filter is located: Under vehicle, passenger side, below seating area, passenger side of fuel tank, mounted on frame in fuel line


it is attached to the frame near the rear passenger side door by a hose clamp, so you need a screwdriver to loosen the clamp, and pliers to remove the lines.

Mar 15, 2011 | 2000 Mercury Grand Marquis

1 Answer

Steps replacing a 1985 grand marquis fuel pump for first time alone thanks


See Figure 1
Two different electric fuel pump configurations were used on fuel injected models. One consists of a low pressure in-tank boost pump in conjunction with an external, frame-mounted high pressure pump. The low pressure pump is used to provide pressurized fuel to the inlet of the high pressure pump and helps prevent noise and heating problems. System pressure is controlled by a pressure regulator mounted on the engine.
The other configuration consists of an in-tank high pressure pump which does not utilize a boost pump.


0900c15280053dd7.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: Disassembled electric fuel pump


REMOVAL & INSTALLATION

In-Tank Pump
See Figures 2, 3 and 4

  1. Disconnect the negative battery cable.
  2. Depressurize the system and drain as much gas from the tank by pumping out through the filler neck.
  3. Raise and support the rear end on jackstands.
  4. Disconnect the fuel supply, return and vent lines at the right and left side of the frame.
  5. Disconnect the wiring to the fuel pump.



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Fig. Fig. 2: Low pressure in-tank electric fuel pump


0900c15280053dd9.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 3: High pressure in-tank fuel pump


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Fig. Fig. 4: Removal of electric fuel pump

  1. Support the gas tank, loosen and remove the mounting straps. Remove the gas tank.
  2. Disconnect the lines and harness at the pump flange.
  3. Clean the outside of the mounting flange and retaining ring. Turn the fuel pump lock ring counterclockwise and remove.
  4. Remove the fuel pump.

To install:
  1. Clean the mounting surfaces. Put a light coat of grease on the mounting surfaces and on the new sealing ring. Install the new fuel pump.
  2. Installation is in the reverse order of removal. Start the vehicle and check electric fuel pump operation. Check for fuel leaks.

High Pressure External Pump
See Figure 5
  1. Disconnect the negative battery cable.
  2. Depressurize the fuel system.
  3. Raise and support the rear of the vehicle on jackstands.
  4. Disconnect the inlet and outlet fuel lines.
  5. Detach the electrical harness connection.
  6. Bend down the retaining tab and remove the pump from the mounting bracket ring.
  7. Install in reverse order. Make sure the pump is indexed correctly in the mounting bracket insulator. Start the vehicle and check electric fuel pump operation. Check for fuel leaks.



0900c15280053ddb.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 5: High pressure external fuel pump

Feb 12, 2011 | 1985 Mercury Grand Marquis

1 Answer

Where is the fuel pump located in a Mercury Grand Marquis 1988, engine or fuel tank?


All vehicles that have fuel injection,that would
be, most vehicles from 1985 on,the fuel pump
is in the gas tank.

Feb 10, 2011 | 1988 Mercury Grand Marquis

2 Answers

WHERE IS THE FUEL PUMP ON 2001 GRAND MARQUIS IF INTERNAL HOW DO YOU GET TO IT


Not sure where the pump is right now I would say it is in the tank, someone else said it is in the engine compartment, but that sound suspicious to me. I would go to the auto supply house and buy a repair manual for the make model and year of the vehicle and get all tools and parts while there that way there is no doubt and you have it for future reference. But I have provided info on how to change you fuel filter I know the answer to that for sure. On the 2001 mercury grand marquis and the fuel filter is under the passenger side rear door right inside of the frame.when you replace it should take about 1 hour to find and 5 minutes to replace.The fuel line comes out of the fuel tank,underneath the car traveling diagonal towards the passenger side of the car.Right before an elbow in the line inside the frame rail,underneath the rear passenger door is your filter there are clips on either end of the filter sort of snap off downward, tug on them with some force,they'll snap down.Have a pan beneath the area.Wear personal safety protection , i.e. glove and safety glasses/goggles.. Be ready for gas to run out.it is only the little bit left in the filter.Pull the lines off and discard the filter properly.Put the lines on the new filter and put the snaps securely back on. Try starting your car let it idle a little while and then turn off your car and clean up your work area and you are all done...

If I can help more let me know.

Hope that helps please rate/score and or place a testimonial to my advice.

Wicked Angel

Nov 19, 2010 | 2001 Mercury Grand Marquis

1 Answer

Where is the fuel pump located on the 1996 Grand Marquis?


1996 Mercury Grand Marquis 4.6L SFI 8cyl
199b5bb.jpg

Fig. 1: The fuel pump is located in the fuel tank. On some models it can be viewed from the side as shown here

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Fig. 2: Electric fuel pump removal

The Relay - Fuel Pump is located: Under hood, driver side, front side of wheelwell, mounted in relay block.


Hope this help to solve it (remember comment and rated this).

Aug 02, 2010 | 1996 Mercury Grand Marquis

1 Answer

2001 Grand Marquis limped home and now won't start.


The fuel pump is located inthe engine compartment. It has a fuel line running to the intake. Usually the top pump with the belt on it. Your fuel regulator, is located on the fuel tank. That you will have to go under the car to get at. No reason to drop the tank. If this helped please rate. Thank you

Feb 12, 2009 | 2001 Mercury Grand Marquis

3 Answers

1998 Mercury Grand Marquis Fuel Pump Replacement


you can try just resetting the fuel pump switch located in the car

the switch is originally in the car for in case of an accident, however, if changed, chances are you also have to reset it

in my 98 grand marquis, the switch is on the left side of the trunk

Jan 09, 2009 | 1983 Mercury Grand Marquis

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