1991 Cadillac DeVille Questions

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When I turn car off u can still hear the air ride compressor still running then brand new battery dead???
Heater does not blow warm air
my 91 deville will stall out like it looses power after i drive it for a while sometimes it will crank right back up and sometimes i have to wait about ten minutes , but it is continuing to stall, seems like only when...
where is crankshaft position sensor in a 1991 cadillac deville
Why does my 91 deville with a 4.9 liter idle ruff feels like it is going to die I replaced isc motor and measured where the screw sits on the throttle arm. But it still doesnt idle smooth. Is this something that will ...
NO(ppm) Max 533 ave345 MEAS 713 491 300 592
my power steering went out but works when its moving
A freind ask me to put his rear drum brakes back together. Someone else took them apart.
i flushed the radiator and also added freon to theac system
I have a 91 cadillac sedan deville with just 60,000 miles on it....recently had the battery changed, engine tune up and oil change done by a backyard mechanic...Car started misfiring, stalling and losing power...even ...
I replaced it with a new battery, did an engine tune up and oil change and the problems started....before this my car was running perfectly. I took it to the dealership and I was informed that my engine failed the co...
Smell gas but can't see any leak, nechanic told me needed to replace fuel injectors, but I think new o rings would do the trick. What is the vacuum hose possibility?
I just did a tuneup plugs,wires.coil,cap,rotor,control moduel, even changed out dist. It runs ok on the freeway but misses when i'm taking off. It doesn't seem to run as good as it did before tuneup gas mileage is 21 ...