Mercury Grand Marquis Questions Any type



The Heater Is Not Working Properly

the core is hot but there is no heat getting into the car. It only blows out cold air

How Do I Get It Out Of Security Mode?

I bought a 2001 Mercury Grand Marquis and it had no key a changed out the ignition and I need to know if the key needs to be programmed to the car. If so can I do it or do I need to take it to a d...


What Color Wire Go In Spots 1,2, And 3 On Rear View Mirror

My mirror got ripped off during windshield replacement. Wire all broke off at terminals . I have a blue/whit wire, a red/black, and a black. They were torn out of spot 1,2, and 3 on connector. Can y...


What Color Wire Go In Spots 1,2, And 3 On Rear View Mirror

My mirror got ripped off during windshield replacement. Wire all broke off at terminals . I have a blue/whit wire, a red/black, and a black. They were torn out of spot 1,2, and 3 on connector. Can y...

Why Does My 2009 Grand Marquis Idle Rough?

Replaced my intake manifold and now my car idles rough

Why Is My 2009 Grand Marquis Runiing Rough After Replacing Intake Manifold?...

Replaced intake manifold Car runs rough until we get the ROM’s up

Any Ideas On What The Problem Is?

I replace my ecu, egr valve, purge canister valve, spark plugs, also coils, changed out fuses and the gas cap. Need answers please on how to get my car to stop stalling.


2003 Grand Marquis; Door Locks Not Working

2003 grand marquis; door locks not working. have proved power from both switches to DDM on pink\yellow and pink\green; we also verified the acuators work w battery voltage on pink\blk + red\org, and p...


How to replace a Blend Door actuator on my 2006 Mercury Grand Marquis?


Car A/C Not Blowing Air. Cold Or Hot Not Blowing.

My a/c not blowing cold, or hot air in my 2008 grand Marquis, I replaced the blower motor still not working, I tried the fuse an still nothing. It’s comes on just fine but it just won’t blow nothin...

Idles Great, Severe Loss Of Power Under Load

I have a 2000 Grand Marquis and just replaced the intake manifold after it sat, not running for 18 months. The car starts and idles beautifully, but on the test drive, it lost almost all power when tr...


2008 Grand Marquis LS

So I ran out of gas in my 2008 grand marquis. Due to the gas gauge not working, I couldn’t tell how much gas was in there. So i would push the select button to check the gas mileage but for some r...

2004 Mercury Grand Marquis Restarting Itself

My car will literally restart itself while driving. It starts and runs just fine. Slight corrosion on the positive battery cable end but nothing that looks wrong there.

Grand Marquis 2002 A/C

My AC does not turn on in a regular basis, but if the knob is on high it will randomly turn on and off. If i try to regulate the speed it will turn off again. When it turns on the air comes from the d...

Lost, Possibly Multiple Issues

I have a marquis that's has baffled 4 shops. Sometimes it runs fine. Usually when I take it to a mechanic. However when it acts up sometimes it stalls everytime I hit the brake. But can keep it run...

Driver Power Seat Stuck On Recline

When I connect the driver seat harness it automatically reclines all the way back and driver seat controls do not work in any positions I have already replaced the seat switch

Stalling Problem And Battery Light

Hello I have 2003 grand marquis with 148k it was driving fine then out of no where my battery light came on I had the battery replaced I had the alternator check the first thing we did was unhook ...

Install A Radio From A 2004 Grand Marquis Into A 1997 Grand Marquis.

My '97 Grand Marquis has a radio with only a cassette player. I would like to install a radio with a CD & cassette players from a 2004 Grand Marquis. I looked up the schematic wiring diagrams for ea...


Fuse Blows After Steering Box Replacement

I replaced the steering box in my 2002 Grand Marquis and now have two problems. The steering is off center and a little tight. I am told an alignment will fix this? Second is whenever I turn on the ...

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