Alternator Screams! Now I do Too! - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 02-27-2010, 10:20 PM
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Alternator Screams! Now I do Too!

1994 325I Convertable: My water pump blew and I changed it. I also changed both belts. The water pump/alt belt shredded when the pump failed. The next day on my way to work the ABS light came on along with the check engine light. The car lost power and I pulled into a parking lot and shut the car off. After a few minutes I started the car and everything seem to be working. (Now my odometer is at zero. What the heck is up with that?) I drove back home with no issues. I put a meter on the battery (12vlts), started the car and still had 12vlts. I replaced the alternator both voltage checks were good. The alternator screams at 1200 rpm's plus. I read through most of the posts and determined the tensioner was likely the problem. I purchased the idler pully too. After installing them...the scream remained unchanged. I noticed that the alternator pully was very hot after only running the engine for few minutes. I thought the pully was not tight enough so I removed the alternator again and ensured it was tight. After installing the alternator I still had the same problem. I called the auto parts store where I got the alternator and they said it may be a bearing in the alternator. I removed it again and they put a load on it....no issues for them. I reinstalled the alternator with hopes that the scream would have magically disappeared....no such luck. I'm now thinking....power steering pump... I did spray a fluid on the alternator pully and the noise went away for a few seconds. I need your help. What am I missing?

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#2 (permalink) Old 02-27-2010, 10:39 PM
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Dumb question? Is the belt on right? I know that it could be a little tricky........

http://www.bimmerwerkz.com/forum/3-s...ems-59093.html

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#3 (permalink) Old 02-27-2010, 10:44 PM
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Quote:
Originally Posted by johnnybayonne View Post
Dumb question? Is the belt on right? I know that it could be a little tricky........

http://www.bimmerwerkz.com/forum/3-s...ems-59093.html

jb
I'll take any question at this point...obvious or not. The rib part of the belt does go around the rib part of all the pullys.
I'm thinking about buying another new belt.

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#4 (permalink) Old 02-28-2010, 12:25 AM
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OK!!! I see the link now. My belt is going over not under the idle pully.
That may be the trick. You are the bomb! Let you know tomorrow.
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#5 (permalink) Old 02-28-2010, 12:33 AM
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Quote:
Originally Posted by b43bobbyb View Post
OK!!! I see the link now. My belt is going over not under the idle pully.
That may be the trick. You are the bomb! Let you know tomorrow.
Glad to help......hope that werkz.......


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#6 (permalink) Old 02-28-2010, 08:21 PM
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All is now good. Thank you for the help.
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#7 (permalink) Old 02-28-2010, 08:23 PM
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Originally Posted by b43bobbyb View Post
All is now good. Thank you for the help.
Great...... You are welcome!


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