Still Squealing after Serpentine Belt & Tensioner Replaced

lesliew · 04-13-2016, 12:29 PM

Hi Guys as the title says my 2007 e92 328i is still making a really loud and annoying squeal 1 week after replacing the serpentine belt and belt tensioner I did the work myself. Following belt replacement the car was silent for a few days but now the squealing is back.

This morning on 3-4 occasions whilst coming to a stop in traffic the car stalled but I was able to start it back up immediately. I also heard what some have described as chirping.

My next guess would be to replace the alternator pulley does this sound right ?, is there anything else it could be.

Car has done 112K

Wolf 335 · 04-13-2016, 12:52 PM

Your next step sound about right.

Riick · 04-14-2016, 11:38 AM

Is your oil housing leaking tossing a bunch of oil on the belt making it slip?

lesliew · 04-14-2016, 07:45 PM

Quote:

Originally Posted by Riick

Is your oil housing leaking tossing a bunch of oil on the belt making it slip?

I don't remember there being any oil on the serp belt that I took out, although I'll double check as I havnt thrown it out yet.

I do have a very small oil leak that was spotted when I had the transmission maintenance done a few months back.

Had no squeaks on the ride home yesterday or today but I went ahead and ordered parts to replace the alternator pulley.

AK. · 04-14-2016, 08:28 PM

That was my issue with the chirping. Replaced them both at the same time and the noise disappeared.

catcher22 · 04-18-2016, 01:27 PM

Same thing happened to me last year. Although, I replaced just the belt (no tensioner/pulley), the squeal went away for a week, then came back. My OFHG was leaking oil onto the belt resulting in the noise. I replaced my OFHG, replaced the tensioner, cleaned the new belt, and it's been silent ever since. Not sure about your stalling symptoms though.

Efthreeoh · 04-23-2016, 05:36 AM

Did you replace the idler pulley next to the alternator pulley?

lesliew · 04-25-2016, 06:38 AM

Quote:

Originally Posted by Efthreeoh

Did you replace the idler pulley next to the alternator pulley?

Yes I did. The idler pulley came as part of the kit.

04-13-2016, 12:29 PM	#1
lesliew Private 1 Rep 72 Posts Drives: E92 328i Sports+Premium Join Date: Jan 2010 Location: FL iTrader: (0)	Still Squealing after Serpentine Belt & Tensioner Replaced Hi Guys as the title says my 2007 e92 328i is still making a really loud and annoying squeal 1 week after replacing the serpentine belt and belt tensioner I did the work myself. Following belt replacement the car was silent for a few days but now the squealing is back. This morning on 3-4 occasions whilst coming to a stop in traffic the car stalled but I was able to start it back up immediately. I also heard what some have described as chirping. My next guess would be to replace the alternator pulley does this sound right ?, is there anything else it could be. Car has done 112K __________________ 2007 328i Coupe Auto \| Monaco Blue \| Cream Dakota \| Premium \| Sports \| CIC retrofit \| 6FL Retrofit \| Logic 7 Retrofit
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04-13-2016, 12:52 PM	#2
Wolf 335 Brigadier General 2572 Rep 3,663 Posts Drives: 2007 E92 335i Join Date: Aug 2012 Location: Toronto iTrader: (0)	Your next step sound about right.
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04-14-2016, 11:38 AM	#3
Riick Banned 136 Rep 818 Posts Drives: BMW Join Date: Feb 2014 Location: USA iTrader: (0)	Is your oil housing leaking tossing a bunch of oil on the belt making it slip?
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04-14-2016, 08:28 PM	#5
AK. Lieutenant 138 Rep 592 Posts Drives: E90 M3/E92 M3 ZCP Join Date: Jan 2015 Location: California iTrader: (3) Garage List 2010 E90 335i [10.00]	That was my issue with the chirping. Replaced them both at the same time and the noise disappeared.
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04-18-2016, 01:27 PM	#6
catcher22 Captain 294 Rep 922 Posts Drives: 2008 335xi Coupe Join Date: May 2008 Location: Virginia iTrader: (2)	Same thing happened to me last year. Although, I replaced just the belt (no tensioner/pulley), the squeal went away for a week, then came back. My OFHG was leaking oil onto the belt resulting in the noise. I replaced my OFHG, replaced the tensioner, cleaned the new belt, and it's been silent ever since. Not sure about your stalling symptoms though.
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04-23-2016, 05:36 AM	#7
Efthreeoh General 19213 Rep 19,731 Posts Drives: The E90 + Z4 Coupe & Z3 R'ster Join Date: May 2012 Location: Virginia iTrader: (0)	Did you replace the idler pulley next to the alternator pulley? __________________ 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."
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