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-   -   Thump Sound When Blower On (http://www.bimmerfest.com/forums/showthread.php?t=747952)

ubermax 01-20-2014 11:51 AM

Thump Sound When Blower On
 
'08 X3 , MT - when warmed up and blower on I get a periodic ( every 3 seconds ) thump sound that seems to be coming from the rear of the engine compartment about where the blower fan would be - goes away when blower turned off.

anyone experience the same ? anyone have any thoughts on what might be causing the sound ?

thanks in advance to those who respond .

joylove 01-20-2014 11:53 AM

http://www.bimmerfest.com/forums/sho...210&highlight=

ubermax 01-20-2014 01:34 PM

Quote:

Originally Posted by joylove (Post 8088946)

thanks joylove , it's not really a popping sound but more of a dull thump but that could be it .

joylove 01-20-2014 01:55 PM

Drives me nuts.

ubermax 01-23-2014 10:44 AM

Joylove , does your sound go away when you turn the blower off ? also, have you brought it in ( dealership or Indy ) for a diagnosis ? or have you solved it yourself ?

joylove 01-23-2014 06:25 PM

If I shut off the fan yes the noise stops. I'm not going to take it to a dealer, if I can't figure out what it is with the entire world at my fingertips I'm 90% sure they can't.


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