BMW E36, E46, E39 Belt & Pulley Failure.

This video identifies why and when to replace serpentine belts, idler pulleys, and tension pulleys on BMW engines, the engine shown in this video is from a 1995 BMW M3 (S50US)

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How to Fix a Squeaky Belt (figure out where the squeak is coming from)
Belt squeal, squeaky belt, belt noise? Learn how to fix a squeaky belt in your car. The serpentine belt in your car powers the accessories such as air conditioning, power steering, the alternator, fan, and waterpump. There are three types of serpentine belt wear, pilling, glazing, and abrasion. Pulley wear will cause your pulley to squeak. A worn out pulley bearing or a worn spring in the tension pulley can also cause squeaking. I show you how to use water to identify what type of squeak problem you have and then how to find the problem. Here is the belt that will get rid of the squeak due to misalignment: words=gatorback%20belts&linkCode=ur2&rh=i%3Aaps%2Ck%3Agatorback%20belts&tag =chri0e2-20&url=search-alias%3Daps&linkId=RR2BPLQO7JXS3LTH Here is the serpentine belt tool: creative=390957&creativeASIN=B0014WDKQ4&linkCode=as2&tag=chri0e2-20&linkId= LBTATM44E2Z7NOI4 Find the Belt Squeak: Replace Idler Pulley: Replace Tensioner Pulley: WD40 to quiet the belt: **If the video was helpful, remember to give it a "thumbs up" and consider subscribing. New videos every Thursday** -Website: -Facebook: -Twitter: -Instagram: -Subscribe Here: -YouTube Channel: Disclaimer: Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.

BMW Idler Pulley Noise : Before & After /// 330i (E46)
A quick video Comparing idler (deflection) pulley noise BEFORE and then AFTER a new one has been installed on a BMW 330i (E46) Here's a DIY on how to replace your bad idler pulley: You should replace your main Serpentine Belt at around 50-60K, so while the belt is removed... check your pulleys (Both the Idler AND Tensioner). Give them a quick spin and listen to how they sound. If they sound like anything like this video, definitely have them replaced. You should replace both pulleys at the same time, if possilbe. This DIY was performed on a 02 BMW E46 330i automatic, alpine white paint, with Sport Suspension Package, you know the drill. So if that is not your vehicle, there might be differences.

HOW TO Replace Belt Idler Deflection Pulley 97-03 BMW 5 Series E39 528I E46 E36 E38 M5
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2003 BMW 330i E46 Replace Serpentine Belt n Pully