LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

noise under acceleration

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Old 06-06-13, 09:13 AM
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DannySz
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Default noise under acceleration

the car has now a noise like (clack clack clack) under the car in the rear only under acceleration at low speeds.

what can it be? the diff? a shaft? rod?
Old 06-06-13, 11:11 AM
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timmy0tool
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does it go with engine speed or vehicle speed? could be many things, even the a broken EGR pipe has a noise (with engine speed).
Old 06-08-13, 08:27 AM
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DannySz
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Originally Posted by timmy0tool
does it go with engine speed or vehicle speed? could be many things, even the a broken EGR pipe has a noise (with engine speed).
with vehicle speed. sounds under the car in the rear and i kinda feel it. I replaced wheel bearing, diff, axle and still but just a little and only sometimes
Old 06-08-13, 08:58 AM
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Yamae
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Did you check the condition of the transmission mount? Wasn't it cracked?
Does your noise synchronize with the movement of the shift lever? This can be checked by touching your hand to the shift lever and accelerate. If the movement and the noise occurs simultaneously, it is caused by the transmission mount in most of the case.

Last edited by Yamae; 06-08-13 at 09:03 AM.
Old 06-08-13, 12:30 PM
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RA40
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A much simpler thought if this has appeared suddenly, is there some hard object stuck in the tire? Rock, big screw...
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