Mercury Grand Marquis Questions Maintenance & Repair

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01 Marquis Wont Go Over 55mph

Drove on highway for first time and car wont go over 55mph. The Trac Cntrl light blinks on dashboard. I am not sure where to start.

5 views with 2 answers (last answer 15 hours ago)
Kelly Tisdale

Oil Pressure Relief Plug

I'm wanting to know if this plug is reverse threads or normal. I wouldn't think it would be reverse but it's not moving in either direction. Thank you in advance.

Kelly Tisdale

Leaking From Allen Head Plug?

There's an Allen head plug underneath where the oil pressure sensor plugs in. Not sure what it is or what it's for but it's leaking, yet it's tight. I need to know what the name of it is so I will k...

11 views with 1 answer (last answer about a day ago)

1999 Mercury Grand Marquis Won't Turn Over

I had thought it was my battery at first so I replaced it so next thought was that it was my starter. After having a friend look at it he said it wasn't that and my fuel pump isn't getting any powe...

42 views with 19 answers (last answer 3 days ago)

Why My Car Shaking When It Changes Gears?

I have a grand marquis 1998 with about 169,000 miles. It uses to shake bad when it changes gears before I replaced my oil gasket that had my number 4 spark plug covered in oil. After I got my oil ...

9 views with 3 answers (last answer 6 days ago)
Robert Young

Reset Antitheft

Changing heater core left plugs undone tried to start antitheft wont let car start how do I reset antitheft

Johnny Steele

Changed Battery

Changed battery and some accessories won't work now.


Where Do I Find The Key Code?

It's not in the manual(refered me to the dealer). I was told by the Service Manager it's located on the ignition. How many didgits should it be? Because it's been 10 years, the manufacturer doesn't ...

8 views with 1 answer (last answer about a week ago)

96 Grand Marquis

Can u help me my ac want turn all tha time sum time it works sum times it don't but my heater works all the time can u tell me wat's the problem is

7 views with 3 answers (last answer about a week ago)
Nicholas Dunbar

Transmission Or Steering Column?

Hi. I have recently run into a problem with my grand marquis. I have an automatic transmission and when I go to switch the stick on the steering column will only goto neutral, drive, and some of t...

9 views with 3 answers (last answer about a week ago)
JessieJustin Smith

2000 Mercury Grand Marquis Gs 4.6 Engine

One coil pack keeps burning I smell it under the Hood I noticed that the connecter to the coil pack was burnt on the inside I replaced the first coil pack because it cracked but my fuse 7 keeps bl...

10 views with 3 answers (last answer about a week ago)
Dell Swenson

2000 Grand Marque No Spark & Not Gettin Fuel Just Happened Just Like That M...

9 views with 2 answers (last answer about a week ago)

Heated Seats

Found seats unplugged plugged them back in they worked then stoped working

6 views with 1 answer (last answer about a week ago)
JessieJustin Smith

On My 200 Mercury Grand Marquis Gs The Fuse Keeps Bowling And The Peace Tha...

in a 2000 Mercury Grand Marquis GS 4.6 what can cause see you 7 to constantly blow while driving or cranking the car and can cause only one compact connector to burn on the inside of the connector...

2 views with 2 answers (last answer about a week ago)
Mark Lott

Auto Repair

How do I replace and reprogfam a drivet- side door computer module that enables dashboard display functions??


Why Does My Heater Only Work On Defrost On 2005 Grand Marquis,ac Works The ...

My climate control only works on defrost when blowing hot or cold. Would removing the face control and cleaning contacts help?

9 views with 2 answers (last answer 6 days ago)
Jock Roby-Smith

Where Is The Radiator Cap Located On A 94 Grand Marquis

14 views with 2 answers (last answer 2 weeks ago)

Engine Swap

Can I replace the 4.6 in my 97 grand Marquis with a 4.6 out of a 98 mustang gt? Would it be a plug and play or what else would have to be done?


The Right Side Signal Lamps Come On But Do Not Flash On And Off , Where Is...

i need to find signal flasher unit for the right side signales where is this located on the car ?

7 views with 1 answer (last answer 2 weeks ago)

My Interior Light Come On And Go Off. Also, The Headlights Do This If The ...

Looked out in the carport and the lights were on, then went off. They kept doing this until I switched the lights to manual. However, the interior lights kept doing the same.

12 views with 1 answer (last answer 2 weeks ago)
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