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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 10-18-2014, 10:36 AM   #1
xmikekay
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Join Date: Sep 2014
Posts: 13
Sound Diagnosis HELP NEEDED!

turning on


engine running


There's a noise coming from the alternator area, it's like a fan hitting against something. Everytime I turn the ignition and while I accelerate at low speed there's that same noise. If I accelerate real slow I don't hear the sound.

I thought it was my disa valve going bad because the car is at 90k and the unit was shaky with the engine on but I replaced that and the car is more responsive but the noise is still there.

also I was driving back from work the other day and my car went into safemode with the gearwheel lit up, it'd start off 3rd gear and the service engine light came on.

TL;DR I had a power steering hose leak and I think the oil might have gotten onto the alternator somewhere, do I have to replace the whole alternator and pulleys or is there a cheaper way to fix my rattle.

I couldn't find the answer to my problem anywhere so your responses are appreciated.

Last edited by xmikekay; 10-18-2014 at 10:37 AM.
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Old 10-19-2014, 02:39 AM   #2
xmikekay
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Old 10-26-2014, 05:56 PM   #3
xmikekay
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