Ticking from a/c compressor area

Discussion in 'Engine & Drivetrain' started by RAWVORTEC, May 20, 2018.

  1. RAWVORTEC

    RAWVORTEC Full Access Member

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    2003 yukon xl 5.3 ticking coming form compressor area. If I rev up, it smooths out as engines smooths. I wanted to know if there was something common on that side of engine that ticks? Lol thanks for any input!
     
  2. Musicars

    Musicars Member

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    My '06 made a tick that became a rattle. It was the tensioner pulley bearing shortly before it seized. I used a wooden dowel as a kind of stethoscope to track it down. It seized about an hour after I found it. Obviously, be careful around moving parts if you try this method.
     
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  3. RAWVORTEC

    RAWVORTEC Full Access Member

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    ok i'll look into it! thanks
     
  4. Chubbs

    Chubbs Full Access Member

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    You can take a windex type of squirt bottle with water and give the belt 2 or 3 shots.

    If the noise stops, then the belt is junk..
    And if ticking persists a bearing is at fault.

    Don't forget that there are 2 belts so I would shimmy on my back under the front end & hit the AC belt only with small squirt of water. If the AC belt & tensioner are original to the truck, I would just replace it as a set with parts ordered from RockAuto & go from there.
     
  5. RAWVORTEC

    RAWVORTEC Full Access Member

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    So it's definitely coming from compressor. If it's ticking does that mean I should replace? Or just deal with the annoyance?
     

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