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#1
01-30-2009, 10:45 PM
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Noise from Heater...
I have 2001 3.0. It’s been great until few weeks ago… I've been hearing couple of weird noises every time I turn on my heater (after vehicle is warmed up) Noise is in low tones and only way you can hear it is when you are standing still. 1st noise... I hear fan humming noise. It sounds like someone is cutting a wood with chain saw in far distance. 2nd noise... I hear continues double thumping noise just like a heartbeat. To describe thumping noise, it a sound when you change fan setting from Dash Vent to Floor Vent. (That thumping & cracking noise when it changes the Vent) I only hear these noises when I turn on the Heater. I hear the noise if I turn on the A/C as well... Recently I changed A/C fan belts and problem was there even before I changed them. Any one has same experience...? Any suggestions or help will be appreciated.... 
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#2
01-31-2009, 09:54 AM
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Similar Issue
 Wish I could help with you're issue... I have one like it. After X is warm the blower motor makes a squeel noise like belt slipping. Slow the blower motor down the noise goes down. Turn it off the noise goes away. It only does it in heat. Turn A/C on and all is quiet.2003 3.0i, 117,000 miles... runs great, all OEM no MODS.
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#6
10-20-2010, 06:05 PM
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I have the same model X5 and mine has just recently started doing this!
"2nd noise... I hear continues double thumping noise just like a heartbeat. To describe thumping noise, it a sound when you change fan setting from Dash Vent to Floor Vent. (That thumping & cracking noise when it changes the Vent)" It is only on when the heat or a/c is on, if i turn it off completly it is gone. It sounds like it is coming from the middle center vent, but hard to hear. Any ideas? It can't be FSR as i replaced that 2 years ago with the updated p/n. Quote:
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#7
10-20-2010, 10:44 PM
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my blower fan squealed for a few seconds and then stopped completely .
new fan blower and fsr will cost £400 fitted at a BMW dealer . 5 hour job . diy parts will cost around £100 , take more than 5 hours , entire dashboard and centre console needs to be removed . dealer is the easier option , don`t mess about with winter upon us . sbahng , maybe your fsr is the only problem .
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#8
10-20-2010, 11:18 PM
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could this be covered by CPO warranty?
FSR might not but how about the HVAC thumping or blower motor?
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#10
10-21-2010, 10:58 PM
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If you are lucky its the FSR. But if you are getting the squeal or humming noise is the blower motor starting to die. I just replaced mine and I would say its' a 6-7 hour job, but I could do it in 4-5 now. Not that difficult but tedious. There is alot of things that have to be removed. A bentley manual is a must. If this scares you don't even try. I replaced mine on Monday.
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_________________________________________________ 2010 X5M /// R63 AMG...Wifey's 540HP Family Hualer 2001 X5 3.0i Sport 335,448 miles & counting... SMG M3 Steering wheel E46 Stainless Racing Headers 4.6is Exhaust Turner Pulleys Afe Intake Brembo drilled rotors PowerFlex Bushings Hualingan 30mm H&R Spacers rear 20mm H&R Spacers front Bavarian Autosport High-Performance Coils Active Autowerke's Performance Software
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