amr112213 Posted March 7, 2013 Share Posted March 7, 2013 I have a 2001 Lexus IS300 and the past two mornings I have noticed within the first five-ten minutes of driving a high pitched whistle. It sounds exactly like a teapot whistling. The temperatures outside have been about 20-30 degrees. I hear the whistle at about 30mph only upon letting off of the gas and the whistle lasts only ten seconds. Today I heard it over my radio/heat which caused a bit of an alarm to me. Any ideas?! 1 Quote Link to comment Share on other sites More sharing options...
James Horning Posted March 7, 2013 Share Posted March 7, 2013 Is the car stock or modified? Exposed , open element air filter ? Quote Link to comment Share on other sites More sharing options...
amr112213 Posted March 7, 2013 Author Share Posted March 7, 2013 Stock, no mods. Quote Link to comment Share on other sites More sharing options...
James Horning Posted March 7, 2013 Share Posted March 7, 2013 I really don't have a place to start on this , as a guess, a brake pad wear sensor , the drive belt tensioner ( bouncing) or its idler pulley bearing . Start it cold and open the hood , idle it up to the rpm that is displayed at 30mph is the noise present under hood? I work on a lot of really clean IS300 cars , try to play with it for more information. Does it sound internal or external ? Quote Link to comment Share on other sites More sharing options...
14u2c Posted March 9, 2013 Share Posted March 9, 2013 Turn down your radio and check to see if the sound is coming from your cup holder area. If so, it's your transmission. Quote Link to comment Share on other sites More sharing options...
CaliKid4Life Posted April 2, 2013 Share Posted April 2, 2013 I'm having the same thing, not very loud though, and it comes from the rear end. I thought it mind be the K&N Cold Air Intake, but coming from the wrong end and only happens when taking off at slow and easy speeds up to like 5 MPH or so. Quote Link to comment Share on other sites More sharing options...
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