Car vibration and humming

UPDATEAK47

MEMBER
2004 LEXUS RX 330
3.3L
V6
2WD
AUTOMATIC
98,000 MILES

It is quiet while the gear is in neutral but vibrates and hums while the gear is on drive or reverse. The vibration is not noticeable while driving on high speed, the car seems very okay but vibrates and hums at low speed or at standstill. I have changed both gear and engine mounts, changed disc, brake pads, all the shocks and springs, did wheel balancing and alignment, yet the issue still persists.

5 Replies

JIS001

MECHANIC
3,411 POSTS

What kind of mounts did you put on your vehicle? The after market brands will not correct the vibration problem. Your better off using dealer parts for that. I learned that the hard way with other vehicles as well. The dealer mounts are liquid filled and absorb the vibration much better then the off brands do. That is why the dealer parts are pricey.

I always gave my customers the option but explained to them about the vibration with the off brand mounts.

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Monday, August 14th, 2017 AT 1:00 PM

UPDATEAK47

MEMBER
7 POSTS

Thanks JIS001. I bought the mounts brand new from the same part dealer I have been buying my parts. He doesn't sell bad parts. However, I am suspecting the exhaust system including the muffler. I will update you when I am done. I just other expert advices. Thanks

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Monday, August 14th, 2017 AT 10:42 PM

UPDATEAK47

MEMBER
7 POSTS

Thanks JIS001. I bought the mounts brand new from the same part dealer I have been buying my parts. He doesn't sell bad parts. However, I am suspecting the exhaust system including the muffler. I will update you when I am done. I just want other expert advices. Thanks

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Tuesday, August 15th, 2017 AT 1:23 AM

JIS001