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Squeaky noise from alternator,how to stop it?

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  • jmcoll Oct 11, 2010

    so how should i fix it

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If you have a squeaky noise from the alterator you need to tighten the belt or have the alternator checked. The pully on the alternator might be freezing up on you.

Good Luck and please accep the answer

Posted on Oct 11, 2010

  • Jyackle5
    Jyackle5 Oct 11, 2010

    http://www.gmfullsize.com/forum/showthre...



    A squeaky alternator is sometimes a sign that the fan belt or something associated with it is squeaking, not the alternator. (Possibly the belt or belt tensioner) So first I'd make sure it's actually the alternator squeaking before I proceeded. You could try some belt dressing on the belt and see if that helps or changes the squeak. If however it is the alternator, that's usually a sign the bearing's gone out and you will need to replace the alternator.



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Hi. A squeaky alternator is sometimes a sign that the fan belt or something associated with it is squeaking, not the alternator. (Possibly the belt or belt tensioner) So first I'd make sure it's actually the alternator squeaking before I proceed with any steps. You could try some belt dressing or replace the belt first and see if that helps or changes the squeak. If however it is the alternator, that's usually a sign the bearing's worn out and you will need to replace the alternator.

Posted on Oct 11, 2010

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Hi,


That it's a common problem that had to do with the "isolators" or something getting dry/unlubricated and needs replacement. He said that the noise usually goes away after the car is driven for a lil bit but reappears when the engine is cold. I'm about to do an Inspect 2 along with replacing the radiator because of the possible failures around 60-70K miles. I'm thinking about getting rid of the squeak noise as well. If the alternator was a new (or rebuilt) replacement unit you should not have any squeaking coming from it. If your Maxima has what appear to be another pulley around which the belt goes that has to be tighten to apply tension then this may very well be the source of you squeak. In such an arrangement, such a pulley is called the Belt Tensioned Pulley and often the bearing begins to squeak as the bearings are going out.


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Posted on Oct 11, 2010

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SOURCE: Squeaky noise from belts.

our pathfindera was doing the same thing, if your talking about squeeking coming from the engine. I changed the belt tensioner and bought a new belt. i ended up just changing the tensioner and kept my old belt on it. The noise went away. The mechanic at the shop could not pin point the problem but he said it was a common problem with the new pathfinder. he said they usually change the belt and tensioner and if that doesn't solve the problem they adjust the pullies for the belt.

Posted on Sep 17, 2008

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