QuestionThere is a noise I believe to be a compressor coming from under hook passengerside that is not turning off even when cars off and keys out...running until killi g the battery air ride level compressor??
AnswerHi,
If on the passenger side, I would think the heater/air conditioning blower motor. Very common and the relay module needed is about $400, but 5 years ago, I was told they were no longer available anywhere. If one is lucky enough to find one in a junk yard, chances are it is no good as well.
The only correction is to rewire with a toggle switch giving you only high speed or off.
The blower motor is located on the passenger side at the firewall. The module that operates it is located at the top of the plastic plenum attached to the f I firewall.
Power antenna in which the motor continues to run if on the rear wheel drive us mounted on the right front fender. About $30 to fix by purchasing a mast kit on the internet.
On the left (drivers) inner fender should be the air compressor for the ride leveling. Commonly continues to run because of a leak either in the rear shocks or the plastic lines from compressor to rear shocks.
If the system holds air, you can take soapy water to the fittings and the shocks and watch for bubbles and that would be your leak.
If shocks are leaking, don't use Cadillac, but after market like Monroe to keep the cost down. You can also find line kits on the internet.
That is the three most common things that come to mind and all three will discharge the battery.
Let me know what you find.
Good luck!
Http://www.autotheftexpert.com
