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Blower fan fuse failure when ac engaged

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Blower fan fuse failure when ac engaged

Post by ecsmoot » Thu Mar 01, 2018 8:39 pm

1987 635csi- Blower fan fuse blows out when ac button engaged. My mechanic cannot find the short. Any suggestions?

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Re: Blower fan fuse failure when ac engaged

Post by hornhospital » Thu Mar 01, 2018 10:07 pm

The AC blower and heater/defroster blower are two separate items. Probably the AC fan is stuck or burned out. It's located IN the dash, unlike the heater blower. I don't envy the person that has to dig it out to diagnose the problem.

And this should have been posted in the engine-mechanical-electrical forum, or maybe the interior forum. Maybe one of the moderators can move it.
Ken Kanne
'84 633CSi "Sylvia"; '85 635CSi "Katja";'87 325is "Odette"; '93 325is "Elvira"; '95 M3 "Ashlyn"

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