On a 1999 Mercury Grand Marquis :
It CAN BE equipped with air suspension
( if it is there will be a rocker style shut off switch for the compressor
located in the trunk , on the drivers side of the trunk , there will be a
label )
* anytime any of the wheels is lifted off the ground you want to
shut the switch OFF
The 1999 Mercury Grand Marquis air suspension relay switch can be found on the firewall in the engine compartment. The air suspension relay switch will be on the passenger side of the firewall.
I have a 1998 ford grand Marquis- and the problem is the air suspension light stays on- how to fix this problem
I have a Grand Marquis and shortly after I start the car you hear a sound coming from the the engine side and that is the rear air suspension lifting the car up(the sound is the air being pumped into the airsuspension to lift the car)
Yes , there was standard suspension , sport / handling package , heavy duty suspension , and the air suspension
Yes.
For a 1999 Mercury Grand Marquis : ( the engine air filter is Motorcraft FA-1668 )
Depends on the Model. Some do, some don't.
under the air filter box
Best to look under the back of the car to see if it has air springs.
Should be under the air filter box.
check under the glove box
According to the 2002 Mercury Grand Marquis Owner Guide : The ON / OFF rocker switch for the rear air suspension is located : ( in the trunk , on the drivers side of the trunk , the Owner Guide shows that there is a label next to the switch )