Horrible Squealing! Need Help!

Discussion in 'General Discussion' started by AshleyR063, Nov 24, 2016.

  1. AshleyR063

    AshleyR063 Junior Member

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    For the last month or so my truck has been making a massive squealing (like wake the neighbors loud) from under the hood. I've replaced the tensioner, idler pulley, alternator, and I'm routed around my A/C compressor pulley with a shorter belt. While the truck is off I can spin the fan freely, no friction or noise. Would the crank shaft pulley/harmonic balancer cause this? I'm at a loss, it's driving me crazy. Any suggestions are appreciated. Thanks in advance.
     
  2. DodgeTx

    DodgeTx Senior Member

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    did you replace the belt? try maybe to grease the belt? something is causing to much tension causing it to make noise.

    I had a ford taurus a year or so ago that the alternator bearing was going out, but I put some grease on the belt every other day and it stayed quiet until I sold it.
     
  3. dapepper9

    dapepper9 Senior Member

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    Start spraying pulleys with silicone spray or wd40 with it running until the problematic one quiets. My bet is power steering pump
     
  4. Marksman

    Marksman Member

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    When you have the belt off, how does the alternator feel/sound when you spin it? I doubt it has one, but if it does have California emissions, it might have an air pump. Spin it too. In fact, do this with everything that rotates. Water pump, power steering, etc.

    Has your steering effort changed any? Check the fluid in the power steering pump. Also follow what has been said above about using WD-40.
     
  5. Rustycowl69

    Rustycowl69 Senior Member

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    are you losing any coolant? My jeep was doing that on start up for a day or two, until I realized coolant was wetting the belt, making it slip and squeal.
     

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