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Old 01-27-2009, 11:21 AM
Oracle12345 Oracle12345 is offline
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Join Date: Jul 2007
Location: USA
Posts: 2,156
Quote:
Originally Posted by kerry View Post
Thank you. Any idea what happened to ruin the climate control? What did you have to do to repair it? It's not a vacuum issue. Blower doesn't run in any position when cold. In warmer weather it works flawlessly. I jumped the main vacuum control switch and it made no difference. I replaced the amp to no avail, initially thinking it was burned out. So, either the second used amp is flawed or the original was ok and the problem is elsewhere, or both amps were/are flawed. I'm guessing it's a bad connection or cracked solder joint somewhere which in cold weather contracts enough so it doesn't conduct electricity.
Problem is on my 79SD which has the servo unit.
Have you ever learned how the system works? Think it will answer some, if not most of the questions.

As for the reason the climate control unit failed on the 83, im guessing the hotwiring of the blower motor overloaded the diode that regulated voltage on the circuitboard of the climate control unit. The po hotwired the blowermotor with like8 guage wire and protected it with a 20 or 30amp fuse. All the wires for the blowermotor were cut
.
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