I know on a 1998 model it is right next to the air filter housing.
No
Yes the pump is electric.
air suspension switch in trunk. compressor under hood
TURN OFF SWITCH INSIDE TRUNK ON RIGHT SIDE
On a 1996 Lincoln Town Car : The electric fuel pump is mounted INSIDE the fuel tank ( the fuel tank is a vertical tank behind the rear seat and the fuel pump is mounted in the side of the tank facing towards the rear seat )
the relay for the air suspension is under the hood in the fuse box and its number 4. I just changed it on mine.
Something is wrong with your air suspension.
the air suspension stopped working on my 1994 lincoln
A simple Google search with the term "Lincoln Air Suspension Conversion Kit" will bring up many results. Click the link for one search result.
Most likely your air suspension bags (or the pump) has failed.
usually under dash left front side
A possible cause for this is that air suspension pump is continully working due to a leaking air bag