serpintine belt

PIOBMW328I · 07-24-2019, 10:35 PM

So i have a 328i 2010. i replaced the Harmonic balancer and Tensioner pulley, but the belt still slips i don't know what else it could be. can anyone help me figure out why it still slips?

Throatpunch · 07-24-2019, 11:33 PM

Replace the belt

PIOBMW328I · 07-25-2019, 01:11 AM

i replaced it also.

randrews15 · 07-25-2019, 06:01 AM

Make sure you don't have an oil leak at the oil filter housing. A small leak will get on the belt and cause it to slip as well as other issues that should be addressed.

PIOBMW328I · 07-25-2019, 12:19 PM

Doesn't have any oil leak either.

pwrdbym · 07-25-2019, 03:18 PM

(You're on the M3 forum BTW)
Are you sure the belt is the same size as your old one? Even a small difference can cause it to slip. You might try a different brand of belt or triple check the dimensions. Is the replacement tensioner pulley the exact circumference? Does it have the same range of motion as your OE one? Any of these things, especially with cheap aftermarket parts, can throw off the dimensions of the whole pulley system.

PIOBMW328I · 07-25-2019, 06:15 PM

im going to try and get a different brand belt and ill get back to you thank you so much.

randrews15 · 07-25-2019, 06:27 PM

Order of from FCP Euro or ECS that way you know you're likely getting the right part. Plus FCP offers lifetime warranty on all parts.

07-24-2019, 10:35 PM	#1
PIOBMW328I New Member 0 Rep 5 Posts Drives: BMW 328i Join Date: Jul 2019 Location: puyallup Wa iTrader: (0)	serpintine belt So i have a 328i 2010. i replaced the Harmonic balancer and Tensioner pulley, but the belt still slips i don't know what else it could be. can anyone help me figure out why it still slips?
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07-24-2019, 11:33 PM	#2
Throatpunch Captain 365 Rep 674 Posts Drives: 2008 E93 M3 Join Date: Jun 2010 Location: Philly, PA iTrader: (0)	Replace the belt
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07-25-2019, 01:11 AM	#3
PIOBMW328I New Member 0 Rep 5 Posts Drives: BMW 328i Join Date: Jul 2019 Location: puyallup Wa iTrader: (0)	i replaced it also.
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07-25-2019, 06:01 AM	#4
randrews15 Lieutenant 289 Rep 553 Posts Drives: 2012 E93 M3 Le Mans Blue Join Date: Nov 2012 Location: Parrish, FL iTrader: (1)	Make sure you don't have an oil leak at the oil filter housing. A small leak will get on the belt and cause it to slip as well as other issues that should be addressed.
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07-25-2019, 12:19 PM	#5
PIOBMW328I New Member 0 Rep 5 Posts Drives: BMW 328i Join Date: Jul 2019 Location: puyallup Wa iTrader: (0)	Doesn't have any oil leak either.
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07-25-2019, 03:18 PM	#6
pwrdbym Second Lieutenant 160 Rep 224 Posts Drives: 06 Z4M Roadster Join Date: Aug 2010 Location: OKC, OK iTrader: (0)	(You're on the M3 forum BTW) Are you sure the belt is the same size as your old one? Even a small difference can cause it to slip. You might try a different brand of belt or triple check the dimensions. Is the replacement tensioner pulley the exact circumference? Does it have the same range of motion as your OE one? Any of these things, especially with cheap aftermarket parts, can throw off the dimensions of the whole pulley system. __________________ 11 BMW E93 M3-- 06 BMW Z4M Roadster 99 BMW M Coupe -- 85 BMW M635CSI 97 M3 Coupe (Track)--95 BMW M3 Coupe 91 BMW 850i 6MT--20 Ram 1500 16 Chevy Tahoe 4WD
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07-25-2019, 06:15 PM	#7
PIOBMW328I New Member 0 Rep 5 Posts Drives: BMW 328i Join Date: Jul 2019 Location: puyallup Wa iTrader: (0)	im going to try and get a different brand belt and ill get back to you thank you so much.
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07-25-2019, 06:27 PM	#8
randrews15 Lieutenant 289 Rep 553 Posts Drives: 2012 E93 M3 Le Mans Blue Join Date: Nov 2012 Location: Parrish, FL iTrader: (1)	Order of from FCP Euro or ECS that way you know you're likely getting the right part. Plus FCP offers lifetime warranty on all parts.
	Appreciate 0 Quote