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Cadillac Repair/92 Cadillac Seville blower motor relay

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Expert: - 1/27/2010


Question
blower motor relay keeps going bad.  works for awhile then wont shut off. ran toggle switch under dash but wire melted. have replaced blower motor relay 3 times.  keep having same problem.

Answer
Hello,

I have seen the wire run with a switch, but never saw the wire melted. You cannot run straight battery power! The wire must be fussed. Did you use #12 of #10 wiring? Anything smaller than 12 will melt. Was the stich rated high enough?

You are dealing with an old Cadillac. Because of their known problem with the resistor module for 20 years along with all sorts of common Cadillac problems, we are left as consumers out in the cold. (pun)

I know Cadillacs very well and the reality is they are great to drive, but they can be a money pit. I recently traded my Allante in for a less problematic suburban. The Allante was starting to show some of the ugly factory installed problems.


I understand your frustration, but it is time to wire properly with a fuse and sell it to someone else. The next thing that will go is probably the engine (Cadillac was notorious new for overheating and junk engines). 4.1, 4.5, 4.9 and northstar were junk! If you have gotten a lot of miles from your 1992, be grateful.  To fix this correctly, it will cost you over $500 for a new module that is doomed for failure out of the box.

I am not trying to degrade your car and I am just telling you the reality of old Cadillacs.

Good lluck1

Ron

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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