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High pitched sound when car is in motion

Tiny
CRICKYE2
  • MEMBER
  • 2003 LEXUS ES 300
  • 124,000 MILES
Whether I step on the gas or the car is in motion, there is an audible high-pitched sound that you can here from underneath the car. Mu initial suspicion is that the driveshaft needs greasing but am not sure and don't know if this can be a do-it-yourself project
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Tuesday, December 27th, 2011 AT 11:02 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
It may be the brake pad warning sensor. Check each wheel by rotating and see if the noise is there.

Roy
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Tuesday, December 27th, 2011 AT 11:22 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Listen real closely to the power steering pump, alternator, and compressor and belt tensioner is it coming from one of these components?
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Tuesday, December 27th, 2011 AT 11:26 PM

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