Question about 2002 Dodge Caravan

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2002 Dodge Caravan- alternator rattle

2002 Dodge Caravan- alternator I have a 2002 Dodge Caravan with 3.3 engine with 75,000 kms. I'm getting a constant rattle sound that I have traced to the alternator, and can heard the loudest with the engine idling.

Is this a common problem with this vehicle?

Any helpful ideas on the root cause, and ways to correct the problem rattle would be greatly appreciated.

Thanks!

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  • 5 more comments 
  • ereto Feb 20, 2009

    I have constant rattling sound and can be easily heard during engine idle.So I tried to trace the rattle sound by using a wooden dowel placing one end to my ear and the other end to diffrents parts of the engine.The alternator is where I can here the rattle sound the loudest.However I will go and take a closer listen and inspection of all the parts in the near-by area,espeicially the tensioner.Thanks 66 chrgr for sharing your expertise and helpful advise.

  • beep 41 Mar 09, 2009

    I am having the same problwm with the rattling noise that sounds like it is coming from the alternator, I don't know what the tensioner is that was mentioned by 66 chrgr, can any one expleain it? What do you do to fix it?

  • mike loshbough
    mike loshbough May 11, 2010

    no usually the tensioner is the problem

  • robert May 14, 2014

    it is your altanater decoupler you canbuy it at any auto parts store or online ebay or amazon you will need to buy the tool to put it on i had the same problem and that fix it

  • robert May 14, 2014

    the way to fix it is to buy a decoupler for your altenater you

  • robert May 14, 2014

    can buy them at you local auto parts store or online at ebay or amazon and you will have to buy the tool to put it on

  • robert May 14, 2014

    If you want to know more go to Gates corp and they have video on these problems hope this helps

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  • Dodge Master
  • 412 Answers

There is a overrunning clutch on the front of these alternators that can get noisy..a replacement alternator is best bet to correct condition..make sure you check all items driven by drive belt.

Posted on May 17, 2009

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SOURCE: 2002 Dodge Caravan- alternator rattle

Thanks, Dave!
I actually found the problem within a week of my posting. The 1-year-old serpentine belt I got from AZ when I replaced the water pump had a 1" chunk missing on the grooved side causing the loudest "thunk" when it went around the smallest pulley.. the alternator! There was never anything wrong with my original alternator. (And the only one that went bad in the process was the rebuilt one I got from AZ!!) I have to admit, AZ has been a friend when it comes to loaning me special tools and helping me troubleshoot; and the guys are great.... but many of their parts can't be trusted. I recommend getting parts from the dealer, and oil-changes and windshield wipers from AZ. But I almost had to laugh.... All this hassle when I KNOW by now to look for the simplest solution.

Posted on Jan 22, 2010

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