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  #1  
Old 05-31-2011, 09:18 AM
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ejgolfnten
 
Join Date: Feb 2005
Location: Elk Grove, Ca
Posts: 206
Alternator

1989 300E 110k

Alternator was making a howling noise after I got off the freeway for about 10 minutes then went away. No other issues were noted.

Any thoughts?

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  #2  
Old 05-31-2011, 09:58 AM
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Hot bearing??

They are replaceable
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  #3  
Old 05-31-2011, 10:04 AM
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Gotta another one...
 
Join Date: Jun 2005
Location: NE Ohio
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It might be your alternator...
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1989 300E 144K
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  #4  
Old 05-31-2011, 11:01 AM
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ejgolfnten
 
Join Date: Feb 2005
Location: Elk Grove, Ca
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Bearing

Quote:
Originally Posted by mbdoc View Post
Hot bearing??

They are replaceable
Easy to do or just get another alternator if necessary? Bought a stethoscope to use just to make sure the sound is coming from the alternator.
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1989 300E

2005 Acura TL

2011 Hyundai Elantra Limited

Swing hard! Take chances!
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  #5  
Old 05-31-2011, 02:10 PM
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Join Date: Jan 2010
Location: U.S.A
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i would agree with first response,sounds like overheating worn out bearings,all you need to do is place a screw driver or wood dowel on it,then listen with your ear,you will hear the noise that does not sound right coming though the end.
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  #6  
Old 06-01-2011, 10:42 AM
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ejgolfnten
 
Join Date: Feb 2005
Location: Elk Grove, Ca
Posts: 206
Replacing Alternator

How difficult is it to replace the alternator? I have done it before on other cars but somehow this looks a bit more tricky with Mercedes. Am I being too concerned? Another recent poster said it took him 3.5 hours and sore arms! Should not be like that!

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