New thermostat has slight rattle/buzzing when shaken

e90yyc · 05-25-2019, 12:15 PM

I vaguely recall reading somewhere that this is normal, but wanted to confirm. Nothing sounds broken and t-stat was packaged well.

Brand is Mahle/Behr. Made in Germany. Appears high quality.

e90yyc · 05-25-2019, 04:18 PM

Sounds like a little check ball rolling around inside.

kicker2222 · 05-25-2019, 08:14 PM

Quote:

Originally Posted by e90yyc

Sounds like a little check ball rolling around inside.

Yeah that’s normal. The one I just installed on my 335d has the same ball rattling noise so you’re good

Efthreeoh · 05-26-2019, 08:46 AM

It's just the expansion valve rattling.

e90yyc · 05-26-2019, 01:56 PM

Thank you sirs. Figured it was all good but nice to confirm.

05-25-2019, 12:15 PM	#1
e90yyc Art Collector 2425 Rep 3,449 Posts Drives: 2007 328xi (GM-delete 6MT) Join Date: Feb 2018 Location: Canada iTrader: (0)	New thermostat has slight rattle/buzzing when shaken I vaguely recall reading somewhere that this is normal, but wanted to confirm. Nothing sounds broken and t-stat was packaged well. Brand is Mahle/Behr. Made in Germany. Appears high quality. __________________ When I'm dead, just throw me in the trash.
	Appreciate 0 Tweet Quote

05-25-2019, 04:18 PM	#2
e90yyc Art Collector 2425 Rep 3,449 Posts Drives: 2007 328xi (GM-delete 6MT) Join Date: Feb 2018 Location: Canada iTrader: (0)	Sounds like a little check ball rolling around inside. __________________ When I'm dead, just throw me in the trash.
	Appreciate 0 Quote

05-26-2019, 08:46 AM	#4
Efthreeoh General 17303 Rep 18,727 Posts Drives: The E90 + Z4 Coupe & Z3 R'ster Join Date: May 2012 Location: Virginia iTrader: (0)	It's just the expansion valve rattling. __________________ A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
	Appreciate 0 Quote

05-26-2019, 01:56 PM	#5
e90yyc Art Collector 2425 Rep 3,449 Posts Drives: 2007 328xi (GM-delete 6MT) Join Date: Feb 2018 Location: Canada iTrader: (0)	Thank you sirs. Figured it was all good but nice to confirm. __________________ When I'm dead, just throw me in the trash.
	Appreciate 0 Quote