hbassi Posted November 2, 2011 Share Posted November 2, 2011 Hi Guys I have a 2003 Es300. Every time the car is running I am starting to get a squealing sound on the passenger side when I have the heat or A/C on. Any clues? Loose belt, bad pulley or something worse? Quote Link to comment Share on other sites More sharing options...
Mike B. Posted November 2, 2011 Share Posted November 2, 2011 If the noise is coming from under the hood then it's possible the A/C compressor or clutch is failing. If it's inside the vehicle then the blower motor bearings are failing. Quote Link to comment Share on other sites More sharing options...
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