I'm not sure where the heater core is in that one but if it was leaking you would smell a sweet smell in the cabin, and would have fog up on the inside of the windshield when on defrost. If it is just water, then a seal either around the door, windshield, or heater duct work is bad.
Water on driver's side foot wells.
2002 Mercury Grand Marquis GS
-
Maintenance & Repair
How many miles can you put on 2002 Grand Marquis if service proper?
2002 Mercury Grand Marquis LS Premium
-
Maintenance & Repair
My 2002 Mercury Grand Marquis LS sputters from a stop and sometimes over 45 mph it has 187k miles I have replaced the following and the problem is still happening. All 8 Ignition coils and spark p...
2002 Mercury Grand Marquis LS Premium
-
Maintenance & Repair
Just realized I have no brakelights, markers, blinkers, or taillights in my 02 Grand marquis? Also noticed my interior lamps are glowing dim!!! But Headlamps/highbeams and all other electrical com...
2002 Mercury Grand Marquis LS Premium
-
Maintenance & Repair
I was on a short drive to local market and car was running fine, after stopping for a light the engine sounded like I was driving on a flat tire. Very loud knocking and engine light started blink...
2004 Mercury Grand Marquis LS Premium
-
Maintenance & Repair
Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.