Found the source of rear deck rattle

tctic · 12-03-2005, 08:34 PM

I found approximately where the rattle noise is possibly coming from for those with rattling/ticking sound from the rear around the windshield area. It is caused by the ventilation system. When I turn on the climate control system, the rear started rattling/ticking. As soon as I turn it off for a while, there was no ticking. So I guess it's the thermal expansion somewhere near the air duct when warm air is pumped through. I never tried cold air yet though.

BMW0 · 12-04-2005, 12:13 AM

Thanks tctic for that info, I was wondering what that sounds was.

12-03-2005, 08:34 PM	#1
tctic Major 38 Rep 1,238 Posts Drives: BMW E90 Join Date: Oct 2005 Location: Canada iTrader: (0)	Found the source of rear deck rattle I found approximately where the rattle noise is possibly coming from for those with rattling/ticking sound from the rear around the windshield area. It is caused by the ventilation system. When I turn on the climate control system, the rear started rattling/ticking. As soon as I turn it off for a while, there was no ticking. So I guess it's the thermal expansion somewhere near the air duct when warm air is pumped through. I never tried cold air yet though.
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12-04-2005, 12:13 AM	#2
BMW0 Colonel 237 Rep 2,059 Posts Drives: AW E90 330i Join Date: Nov 2005 Location: Spokane, WA iTrader: (0) Garage List 2006 330i [0.00]	Thanks tctic for that info, I was wondering what that sounds was. __________________ 330i 6MT l 255 HP @ 5900 rpm 214 lb-ft Torque @ 3500 rpm l Alpine White l Beige l Aluminum l ZSP l 494 l PDC "Freude am Fahren" = "Joy to Drive"
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