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Occasional noise coming from engine

Discussion in 'Stock 2002 - 2005 Explorers' started by lawrencee11, June 11, 2015.

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  1. lawrencee11

    lawrencee11 New Member

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    First off I would like to apologize if this has been covered somewhere else, and if it has please point me in that direction.

    My transmission of my 2004 Explorer recently came out (couldn't really be mad, lasted 189,000 miles and cost $2500 for a rebuild with warranty) and my car seemed to be making a noise before then. After the replacement, it started making what I believe is a different noise. This is like a rattling that happens between 2200 and 3000 rpm. I am not sure if above that I just cant hear it over the engine noise or if it actually stops. I have noticed though that every once in a while it will go away. Any help is appreciated
     
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  3. drdoom

    drdoom Well-Known Member

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    Is that a V6? Either way it sounds like timing chain maybe?
     
  4. lawrencee11

    lawrencee11 New Member

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    Yes it is. 4.0 V6. I was thinking timing chain but trying to find out if theres anything that I could fix with a kind of limited skill set and more limited tool set.
     
  5. Tyleryac

    Tyleryac Active Member

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    If it is a rattling noise like you described in the first post, then it is likely a timing chain.
     
  6. lawrencee11

    lawrencee11 New Member

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    I looked around in the engine the best I could and when I tap on the tensioner pulley for the serpentine belt there is a very distinct noise that comes from it. It is definitely clicking when it is tapped on. Should it be completely solid like all the other pulleys or is it normal to make a noise?
     
  7. 2Trux

    2Trux Active Member

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    Pull the belt off, turn and wiggle the pullys to see if any have bad bearings. You can also (when cold) run the engine for a very short time without belt to see if the noise goes away.
     






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