Question about Toyota Sienna

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My Sienna has a very loud sqeel coming from the clutch of the A/C compressor. I want to know if there is anything I can do to fix it with out replacing it. I have tried spraying it with carberator cleaner and that seems to help a little. But it still sqeels when I turn the A/C on or speed up after a stop with it on. Any suggestions other than replacing the clutch. If not, any tutorials on how to replace the clutch or compressor.

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The rubber belt which turns your A/C compressor is loose or worn out. What is happening is when you turn on the air conditioner, the belt is slipping trying to turn the compressor and it is heating up as it slips, (serpentine belts can take a lot of heat) and when it gets hot enough, it will eventually grab the compressor pulley and start turning it. If you have not had the belt replaced since you have owned your vehicle, then replace it. Before you replace it and spend money, check to see if it is loose. A loose belt would squeal. You can also try to spray a little bit of WD-40 (don't spray alot) on the pulley wheel and see if the noise goes away.

Posted on May 16, 2010

  • yk_sch May 16, 2010

    I orginally thought it was the belt and after trying belt dressing spray a few times, I replaced it. The belt does not seem to be loose either. It used to sqeel when ever the car was started up or on acceleration. After I sprayed the clutch with carberator cleaner it stopped doing that but now sqeels when I turn it on or have it on and accelerate. Should I try another belt or wd-40?

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