air suspension help

[jimmy9299]

i just got a 93 400ls runs great with 123k on it my questions is the front end seems lower than the back and its a little rough (like a lincoln when its down to the floor but not a s bad) how do i know if i have air suspension in the car i looked under the hood and on the left hand side i pull off cover and it says air pump so does that mean i have air suspension what process can i take to check it out myself i woul like to know where all switchs are and relays or thx for help the rear in jus fine

 

[jimmy9299]

i have checked some pic out and i see that there is a cover over the strut and its says air suspension i dont have that on me strut

 

[Lextreme II]

Most of the time, the air shocks are bad. If the pump is bad, all four corners will be lowered then normal.