Mercury Grand Marquis Air Shocks

Check the air springs.

I have a 99 Grand Marquis. You are suppose to change the shocks every 50,000 thousand miles.

You only have to change shock when the don't work well anymore.

their should be a on - off switch in trunk on passenfer side,if var is jacked up in rearend or put or been on a lift the switch should be turned off befor raiseing,it will blow the air ride system.if not turned off it will keep pumping air into the system.when back on ground turn it back on.this may be the reason for your hard ride.

@papa so on a 2001 mercury grand marquis they have a switch in the trunk also?

i service may victoria 2003 engian in water.mak engien naking

I have a 2005 grand marquis45k miles just had to change the air compressor for my car 400$ job for the air suspension..