Is this belt squeak? Or something else?

romnation · 05-23-2018, 06:03 PM

I can't seem to pinpoint the noise, but it seems to be coming from where the belt/alternator is. It only happens after cold start and is gone after idling for about 5 minutes. Car is an 09 135i and has 54k miles on it. I assume it has the original belt. The idle pulley and belt tensioner were replaced around 4k miles ago. Any ideas?

Gangplank · 05-26-2018, 05:33 AM

Doesn't quite sound like belt squeak to me. Not sure what it is tho. Does it change when you rev the motor?

romnation · 05-28-2018, 10:39 PM

Quote:

Originally Posted by Gangplank

Doesn't quite sound like belt squeak to me. Not sure what it is tho. Does it change when you rev the motor?

Of course now it's stopped doing it. (It is really hot out so that might have an effect) so I can't test this.

05-23-2018, 06:03 PM	#1
romnation Private 18 Rep 69 Posts Drives: 135i Join Date: Jul 2016 Location: Chicago iTrader: (0)	Is this belt squeak? Or something else? I can't seem to pinpoint the noise, but it seems to be coming from where the belt/alternator is. It only happens after cold start and is gone after idling for about 5 minutes. Car is an 09 135i and has 54k miles on it. I assume it has the original belt. The idle pulley and belt tensioner were replaced around 4k miles ago. Any ideas?
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05-26-2018, 05:33 AM	#2
Gangplank Brigadier General 1542 Rep 3,071 Posts Drives: 2011 e82 135i n55 Sport w/ DCT Join Date: Nov 2015 Location: Vero Beach, FL iTrader: (2) Garage List 2011 135i [0.00]	Doesn't quite sound like belt squeak to me. Not sure what it is tho. Does it change when you rev the motor? __________________ 2011 135i w/ DCT \| ZSP Sport Pkg \| PPK \| Ohlins R
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