What's this engine sound

Discussion in 'The "Other" Bench' started by Donuts & Peelouts, Nov 28, 2019.

  1. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    After some rain and snow I started my 01 Silverado with a 5.3 and heard this. What do you think it is?

    It fades then comes back at idel.
  2. Houmark

    Houmark Well-Known Member

    Hi Nailhead Ronnie..

    No expert, but I would check all belts and pulleys, I think it sounds like something dragging og rubbing..
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  3. sriley531

    sriley531 Buckle up, this could get rough....

    To echo the above post, I've heard idler pullies make some pretty funny sounds at idle, especially if foreign debris was introduced. Not sure that's your issue here, but it's an easy place to start.
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  4. Briz

    Briz Platinum Level Contributor

    Take the serp belt off and then start it. No noise? start with idlers and pulleys. noise still there pull the insp cover off the trans and check back in that area
  5. gsx455-4ever

    gsx455-4ever Gold Level Contributor

    x 2 . And try turning the AC on and off. If I'm not mistaken the AC compressor has its own belt.
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  6. Smartin

    Smartin antiqueautomotiveservice.com Staff Member

    Yes I would definitely check pulleys. Especially tensioner or idler.
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  7. gsgnnut

    gsgnnut Well-Known Member

    A.c. compressor bearing makes a terrible noise like that when worn . turn on ac and if it goes away you pin pointed the problem.
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  8. Houndogforever

    Houndogforever Silver Level contributor

    smash it with a hamner!!!

    Ok, I can't add anything here, but those are some great troubleshooting suggestions guy.
    Once you do something a time or two, it's "common knowledge", but if you have never seen it, it's a bloody break thru.

    Really appreciate the folks here, unbelievably helpful group.
    Hope your thanksgiving was great.
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  9. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    Thanksgiving was great.
    Sorry for the late reply guys I had to work today. I'll do as guys said. And thanks for everyone's help.

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