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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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Old 02-10-2005, 09:29 AM   #1 (permalink)
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I drove over the pothole the other day, and a rattling sound started coming out from the A/C ducts when the fan is on. It goes "tr-tr-tr..." and speeds up when the fan is at higher speed. Is it the blower motor, or something just touching the blades of the motor, making that sound? The whole A/C-fan system works fine - just that annoying (and pretty loud) cracking sound.
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Old 02-10-2005, 07:43 PM   #2 (permalink)
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Nobody ever has replaced their blower motor? Do you need to remove glovebox for access, or the entire dashboard? Any good DIY with photos out there?
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Old 03-23-2005, 05:57 PM   #3 (permalink)
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Originally posted by mostwired@Feb 10 2005, 07:43 PM
Nobody ever has replaced their blower motor? Do you need to remove glovebox for access, or the entire dashboard? Any good DIY with photos out there?
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I get the same noise - it's very noticeable when the fan is at lower speeds, not as much so when it's turned up to 3 or 4.

I've been thinking about trying to get a used motor off of ebay, but maybe I'd be better off just pulling out the motor and checking it out. I'll let you know if I find anything out.

- Damion
'95 325is
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Old 03-23-2005, 10:03 PM   #4 (permalink)
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Damion - the blower motor is accessible from the engine bay - there's a cover for it; pretty easy to take off. My noise however, just misteriously went away - so I didn't have to replace mine. You can take it apart and lubricate the bearings - I guess that'll get rid of your squeaking.
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