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Old 03-27-2001, 11:08 PM
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Join Date: Dec 2000
Location: ny
Posts: 119
i am working on 1988 300ce.blower motor does not work at all
i know it did at one time(car was in the showroom a long time)any help would be appreciated on how to correcly diagnose the problem

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Old 03-28-2001, 01:38 AM
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I just went through this with my 1985 300D. First and foremost, check the fuse at the fuse block. Then, change the fuse. I know it sounds silly, but the fuse in mine looked good and had continuity. The blower refused to work intil I replaced the fuse. Don't ask me why. I thought that Mike Tangas was nuts when he told me to change the "good" fuse. But it worked!

The second thing to check would be the mono-valve, it so equipped. It is located on the firewall. If the seal is leaking, it will short out and may cause the climate control to malfunction.

My money is on the fuse.

Good Luck!

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