Ravey Head Posted August 1, 2011 Share Posted August 1, 2011 Hi, I drive a 2001 ES300. While driving with the A/C on, I hear a high pitched noise about every 1-1.5 minutes that lasts about 15 - 20 seconds. It's regular and always happens at about that interval for that duration. The noise itself is steady and probably around 8-10khz. I've had passengers verify that they can hear the noise as well. Any clues as to what it could be? Thanks! Quote Link to comment Share on other sites More sharing options...
lenore Posted August 1, 2011 Share Posted August 1, 2011 sounds like the belt that drives the AC/alternator is a little loose.... Quote Link to comment Share on other sites More sharing options...
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