BLower motor Or Blower final stage unit - BMW Forum -

3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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post #1 of 1 (permalink) Old 06-24-2004, 12:23 PM Thread Starter
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tt540i is an unknown quantity at this point
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How do you check the Blower motor circuit before replace it?

Symptoms on 94, 540i: Fan is running but there is a humming noise at all speeds(1 to 4). When blower switch set at speeds 1 to 3, then arbitrarily shut off itself every minute or two. But when it set at speed #4, it will continue running with it generate a very lound noise.

Does anyone has this problem before?
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