Why would the fan in 1991 Cadillac DeVille not cut off even when the car is turned off?
Usally it's Because the Module 4 the AC burns out & goes 2 ground-& will kill the battery if not dsconnected.Some modules are mounted inside the car on the evaporater case with a couple of screws.
What causes a blower fan on a 1991 Cadillac DeVille to keep on running even after the ignition is turned off AND the relays are disconnected both under the dash and under the hood?
I have the same problem with a 1991 DeVille that I acquired three days ago. The blower worked fine at first, then would not shut off but would vary speed from the dash control. Now it only runs at high speed in the off position. After shutting off the car, the dampers repositions to the heating position from the cooling position. the blower motor has a high amp draw shorting the control module, replace them…
I put a motor transmission in my 1991 Cadillac DeVille the motor transmission is out of a 1993 Cadillac DeVille I believe that the wiring harness is a little different?
How many Motor mounts are in a 1991-1993 Cadillac DeVille? Technically, only one (passenger side front). However, since the engine and transmission are bolted together they are suspended in the chassis as an assembly. So there are 3 transmission mounts and one engine mount that work together to suspend the engine and transmission as an assembly. Cadillac Man
On my 91 sedan deville it is at the bottom of the firewall on the passenger side. About where the passengers feet would be. Take the R. F. Tire to be able to see better and crawl under and just behind the disc rotor. BE Careful the line into and out of the filter are plastic and MAY be BRITTLE (More than likely)