2003 Lexus GS 300 Unknown noise source

2003 LEXUS GS 300
61,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JUSTKEN
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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!
Jul 16, 2008 at 10:01 AM
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DOCFIXIT
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Check the motor mount on the front of the engine. Also check the right side strutt mount.
Jul 16, 2008 at 10:35 AM
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RASMATAZ
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(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
Jul 16, 2008 at 10:43 AM
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