Mercury Grand Marquis - Recent Questions, Troubleshooting & Support

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Coolant leaking from underneath car near oil pan.

THIS IS STRANGE, BECAUSE THE NEXT PAN BEHIND THE OIL PAN IS THE TRANSMISSION PAN. UNLESS MECURY HAS DEVELOPED SOME STRANGE SYSTEM THERE SHOULD BE NO WATER OR COOLANT ANYWHERE IN THAT LOCATION? IF THE PLASTIC PLUG IS LEAKING IT CAN BE FIXED BY REMOVING IT AND WRAPPING THE THREAD WITH TEFLON TAPE AND RE-INSERTING IT AND TIGHTEN IT. IT THE PAN ITSELF IS LEAKING, THERE ARE ONLY TWO THINGS HERE. ONE, YOU CAN RE-TIGHTEN THE BOLTS TO SEE IF THEY ARE LOOSE AND SEE IT THIS STOPS THE LEAKING. OR, IF THE LEAKING DOESN'T STOP, YOU NEED TO REPLACE THE PAN GASKET WITH A NEW ONE AND REFILL THE TRANSMISSION WITH NEW OIL. YOU MIGHT AS WELL CHANGE THE FILTER WHEN YOU HAVE THE PAN OFF, BECAUSE IT IS PROBABLY OVERDUE. I THINK YOU WILL FIND THIS LEAK IS A STICKY RED FLUID CALLED ATF OR AUTOMATIC TRANS. FLUID. THAT WILL NEED TO BE REPLACED. NEW FILTER, NEW GASKET RETORQUE THE BOLTS, IMPORTANT, DON'T WANT THAT THING FALLING OFF, NEW FLUID, YOUR BABY SHOULD PURR AND NOT WIZ ON THE FLOOR ANYMORE. NOT SURE HOW TO DO ALL THIS? BEAT FEET TO THE NEAREST PARTS STORE AND BUY OR ORDER THE CHILTON OR HAYNES MANUAL FOR 93GRAND MARQUIS AND YOU WILL HAVE PICTURES AND STORIES YOU WON'T BELIEVE! CAN'T GO WRONG! GOOD LUCK!

NEED HELP REPLY TO:ARCLIGHT1217
3/8/2024 10:32:11 AM • 1993 Mercury... • Answered on Mar 08, 2024
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2000 Mercury Grand Marquis cranks, but won't start and while cranking the theft light on flashing fast.

Question edited for clarity. Question moved to model category. That is a lot of items changed for nothing. The flashing anti-theft light was telling you the answer. Key
  1. Insert the key into the driver's side door lock.
  2. Turn the key once, but not all the way to unlock the door. Leave the key in this position for 40-60 seconds. ...
  3. Do this again, but turn the key in the opposite direction.
  4. Remove the key from the door, get into your Ford, and start the engine. The system should be reset.

How to Reset the Anti-Theft System on Your Ford

.. And also this! https://www.crownvic.net/ubbthreads/ubbthreads.php?ubb=showflat&Number=3731914 ..
5/31/2023 7:49:25 PM • 2000 Mercury... • Answered on May 31, 2023
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How to replace a heater coil in a 2002 Grand Marquis

Videos that show this job.
5/6/2023 11:45:46 PM • 2002 Mercury... • Answered on May 06, 2023
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2004 Mercury Grand Marquis. What and where are the diodes please?

Probably a broken wire in the loom. Check for continuity with your test meter and oscilloscope.
3/19/2023 6:16:48 PM • 2004 Mercury... • Answered on Mar 19, 2023
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I have a clicking noise in the right rear of my 2005 Mercury Grand Marquis. It sounds like it clicks in time with the tire rotation

There are brakes shoes inside your rotor , they are for the emergency brake, lightly apply the e brake see if it changes the noise it may go away after you take. It off, rust builds up in ther
3/9/2023 5:07:11 PM • 2005 Mercury... • Answered on Mar 09, 2023
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Where is the map sensor located on 04 Mercury Grand Marquis

According to my info, you don't have one. You do have a maf sensor and that should be in air intake.
3/7/2023 4:51:46 PM • 2004 Mercury... • Answered on Mar 07, 2023
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I need to check and

Under the hood there will be a dipstick marked for transmission. You need to check the fluid level while the engine is running. If you need to add fluid, you use a funnel and pour the fluid in through dipstick tube.
3/4/2023 7:18:26 AM • 1999 Mercury... • Answered on Mar 04, 2023
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Why do my windshield wipers only work on high speed and when turning them off they stop where ever they happen to be, not going all the way down?

could be the motor wiper or the wiper control module first unplug electrical conector at the wiper motor, clean both the elect. connector and the motor connections as well, if this dont fix the problem you will have to change your wiper control module.
2/27/2023 7:42:18 PM • 1995 Mercury... • Answered on Feb 27, 2023
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2005 Mercury Grand Marquis. Why does the transmission have two plugs listed instead of one please?

Question edited for clarity and what I think you thought you were saying. Question moved to model category. The one on the bottom is the Drain Plug. The one on the side is the Fill / Level Plug.
2/18/2023 5:52:45 AM • 2005 Mercury... • Answered on Feb 18, 2023
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2003 Mercury Grand Marquis. Power point fuse location please?

Here is your Fuse Box Diagram.

Mercury Grand Marquis (2003-2011) fuses and relays

https://fuse-box.info > mercury > mercury-grand-marq... The fuse box is located under the left side of the instrument panel. The location of the fuses in the passenger compartment: Mercury Grand Marquis (2003- ... https://www.google.com/search?q=2003+Mercury+Grand+Marquis.+Power+point+fuse+location ..
2/1/2023 8:31:10 AM • 2003 Mercury... • Answered on Feb 01, 2023
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My 2000 grand marquis has a failed evac system

I'll try to look it up in my shop manual when I get home. don-ohio
1/7/2023 7:03:30 AM • 2000 Mercury... • Answered on Jan 07, 2023
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1998 Mercury Grand Marquis belt diagram options

That's not the way it works. You purchase a Bypass Pulley and fit it where the compressor was. Same belt routing and length. https://www.google.com/search?q=1998+Mercury+Grand+Marquis+bypass+pulley ..
1/4/2023 5:34:50 AM • 1998 Mercury... • Answered on Jan 04, 2023
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How many quarts of oil does the 4.6 liter V8 take?

The V8 4.6 liter takes 6 quarts with oil filter change.So you'll need to buy 7.
11/29/2022 7:43:20 PM • 1993 Mercury... • Answered on Nov 29, 2022
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1987 mercury marquis will crank but has no fire.

Do you have a fuse box under the hood on the drivers side fenderwell ?
11/28/2022 9:19:54 PM • 1987 Mercury... • Answered on Nov 28, 2022
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1995 Mercury Grand Marquis. How many fuses does my digital instruments cluster have please?

Question edited for clarity. Question moved to model category. Here is your full fuse box diagram. If your cluster is dark, check the rheostat to adjust brightness. Got grandchildren that like to play 'driving the car'?

Fuse Box Diagram Mercury Grand Marquis (1992-1997)

https://fuse-box.info > mercury > mercury-grand-marq... Here you will find fuse box diagrams of Mercury Grand Marquis 1992, 1993, 1994, 1995, 1996 and 1997, get information about the location of the fuse panels .. ..
11/12/2022 5:40:28 AM • 1995 Mercury... • Answered on Nov 12, 2022
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OEM Keyless entry code for 2004 Mercury Grand Marquis anywhere other then trunk?

Looking for mine also Locked my keys in my car and never had the keypad code
11/6/2022 10:13:51 PM • 2004 Mercury... • Answered on Nov 06, 2022
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How do i bypass the pats security system in my 03 grand marquis so that my key will start the car

Go to your fuse box and pull off fuse number 8, but be prepared to loose the clock memory or you need to power the clock memory wire from somewhere
11/1/2022 12:38:37 PM • Mercury Grand... • Answered on Nov 01, 2022
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Where is the cooling fan relay?

Have you tried turning the AC on? Generally works with the AC on.
10/25/2022 3:43:49 AM • 1997 Mercury... • Answered on Oct 25, 2022
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Code 024 & 025 on 2003 mercury EATC

My 04 Marauder had the same issue...hot air no matter what. No noises and the airflow changes properly but I saw a video on Youtube about replacing the blend door actuator and toward the end it showed how to do a self test to get the codes. I did that and got a code of 025 which I think is the blend door actuator. In doing so, at least for now, the AC is working properly for both cold and hot. The AC system itself is fine and told to me by a local mechanic. Here's the video link: https://www.youtube.com/watch?v=_31kGBxyxy8
9/14/2022 6:52:29 AM • Mercury Grand... • Answered on Sep 14, 2022
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