I have a 03 grand marquis replace the air compressor n now the rear end won't raise up can sumbody plz help me

SOURCE: rear shocks on a 1996 Mercury Grand Marquis

2 bolts on the top of shocks and 1 bolt on the bottom but the top 2 bolts are a pain in the neck

SOURCE: air suspension on my grand marquis comes on with engine off

What is probably going on is the air suspension has a leak so the compressor is breaking down. So it will run at odd times trying to make up for the times it can not run. What you need to do is look for a conversion kit. The conversion will stop all problems that you are having now and you will never have to worry about it again. I would recommend strutmasters.com. They have great prices and there kits are guaranteed to last the life of the car. I posted the link below so you can take a look.

http://www.strutmasters.com/lincoln-suspension-parts-s/1.htm

I hope I was of some help

Good Luck!!!

SOURCE: Check Air Suspension for 2000 Mercury Grand Marquis

It sounds to me like your compressor got killed. What probably happened is that the airbag got a hole or tiny crack in it so the compressor has to work extra hard because it is like blowing up a balloon with a hole in it. Therefor the airbag killed the compressor. I would recommend going to strutmasters.com and taking a look at our conversion kits. these convert you from the airbag to a powder coated American made steel coil spring that is guaranteed to last the life of the car. I added the link below so you can check it out.
http://www.strutmasters.com/mercury-suspension-parts-s/25.htm

I hope I was of some help
Good Luck!!!

SOURCE: Rear air suspension is completely deflated and

If you haven't fixed this problem yet. There is a connection under the passengers side bumper that gets oxidized. A little electrode grease will fix this right up. You can email me at [email protected] for further help

SOURCE: 1999 Merc Gr Marquis: Air Suspension Warn Light / compressor

Try calling several Autozone stores and see if the have a scanner for the air suspension.

There are height adjustment sensors under the car and it may be that a sensor got smashed or failed. I remember reading this tech stuff about 20 years ago for a 1988 LSC. As long as the air is not leaking and the compressor runs its a plus.

I always recommend going to a Salvage yard and asking about the parts and asking if I can look at where the parts go. That way you are not tearing up your car trying to do something you don't have tools for.