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Cadillac Repair/1991 Cadillac Blower fan keeps running

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Expert: - 12/29/2009


Question
Hi,

Would you be so kind to forward your answer and scematics of the 1991 Brougham RWD with the blower fan running even with ignition off?
Seems I have the same trouble. Antenna motor also keepd running, I disconnected the antenna.
The fan I really need defrosting the car.

Thanks,

J.B

Answer
Hi,

I do not have schematics for your car, but you can purchase these and much more by becoming a member at www.alldata.com. I generate no income from them but refer the site because it is an excellent source. You join and address the exact vehicle you are looking for and everything is in front of you for a year.

Your antenna drive cable is broken. I think you can still buy the mast and cable kit from the dealer. Cheaper than buyin the motor assembly.

Cadillac has had the blower problem since 1980. They never fixed a k own problem, they just collected $500+ to replace the resistor module. I have seen this corrected cheaply that will give you high blower. Use a toggle with a 20a fuse. Hook to ignition power with the other end going to the blower
motor. This way the battery won't go dead on you.

I know if I had this problem, this is how I would handle it because I don't like lining a dealer's pocket.

Rob

Cadillac Repair

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Rob Painter

Expertise

Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?

Experience

Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.

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