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2003 Lexus GS 300 Unknown noise source

Tiny
JUSTKEN
  • MEMBER
  • 2003 LEXUS GS 300
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 61,000 MILES
Hi,

I own a used Lexus GS 300 with 61,000 miles on it. Recently it has started making a noise in two instances:

(a) after first starting the car, I will step on the brake to move the transmission into R from P. The car will move slightly under power and make a "clunk" sound.

(b) this sound also occurs when applying the brakes and making a turn (especially right hand).

The sound doesn't occur when slowing to a stop in a straight line. I took the car to a mechanic and he agreed he could hear the noise but was unable to pinpoint the source.

Any ideas?
Best regards!
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Wednesday, July 16th, 2008 AT 10:01 AM

2 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Check the motor mount on the front of the engine. Also check the right side strutt mount.
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Wednesday, July 16th, 2008 AT 10:35 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
(a) after first starting the car, I will step on the brake to move the transmission into R from P. The car will move slightly under power and make a "clunk" sound.

Have the curb idle speed check and for the clunking check the center support bearing and U joint/s

(b) this sound also occurs when applying the brakes and making a turn (especially right hand).

Could be the CV joint/boot
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Wednesday, July 16th, 2008 AT 10:43 AM

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