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Might just be an easy fix....other post is blank by accident.. 900

posted by  someone claiming to be 850 owner on  Wed Mar 10 07:45 CST 2004 [RELATED]

Had the same problem on a '94 944 that I used to have. System was fully charged, and A/C would not turn on AT ALL when I tried to jump the system switches. The A/C control module (on the dash, above the radio) is known to get solder joints that crack and fatigue over time, which will keep the compressor from tunring on. I took it out, resoldered the points on the circuit board, and wham!! A/C worked again just like new. Check out the brickboard for instructions on how to remove the A/C control module (you'll have to remove the radio, and do it carefully, should be an easy job). I'll bet you that the problem is in the solder joints in your control module. There's a black relay in the middle of the circuit board that gives power to the A/C compressor. Read up about this, I remember seeing pictures of the solder joints to check somewhere online. But just be sure to go over all the solder joints that look suspect. Best of luck!!






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