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

New-to-me 98, driveline vibration

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Old 06-26-19, 09:36 AM
  #16  
mikaelse
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Here in sweden we often need to shop around for descent price everwhere .
These guys have supplied me with good OEM LEXUS stuff a few times.
Often from warehouse in Japan.

https://www.amayama.com/en/part/toyota/3751130020

Price for this thing is here only 136 US$ each
but shipping from their warehouse overseas will cost a bit.
Have no idea about duties and tax etc.
But they probably know.
Old 06-26-19, 09:52 AM
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Fit1too
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An even better price for 2: https://www.ebay.com/itm/NEW-GENUINE...EAAOSwtM9cZJYG
Old 06-26-19, 11:09 AM
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mikaelse
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That seems to be the engine mounts. Grated that they may need replacing.
Old 06-27-19, 02:58 PM
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relentLS
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Default Came up with a plan

Well I came up with a plan, gonna start with the motor mounts and if those don’t do it, then I’ll move on to the flex discs, center support and possibly the front half of the drive shaft assembly with the U-joint.

I’ll post updates as the saga unfolds...
Old 07-12-19, 05:34 AM
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relentLS
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Got the motor mounts replaced. They reduced the vibration by about 20%. The engine is smoother at idle too.
Old 07-12-19, 08:05 AM
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Sin1UZFE
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Originally Posted by relentLS
Got the motor mounts replaced. They reduced the vibration by about 20%. The engine is smoother at idle too.
vibration is still there though?
Old 07-12-19, 11:52 AM
  #22  
YODAONE
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Originally Posted by Sin1UZFE
vibration is still there though?
Transmission mount?
Old 07-12-19, 11:57 AM
  #23  
relentLS
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Yes, the vibration is still there. Transmission mount was replaced before the motor mounts. I’m thinking the flex discs are next
Old 07-12-19, 07:54 PM
  #24  
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Well bummer, but at least there was an improvement—and the motor mounts need changed out after a while anyway.
Old 07-13-19, 08:06 AM
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peterls
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My money is on the center support bearing. There is no way to tell until you replace it. I had a similar problem with my LS and it also exhibited more vibrations at certain speeds, and more on acceleration or on uphill, and less or none on downhill. Replaced the center support bearing and vibration was gone.
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Old 07-24-19, 04:13 PM
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relentLS
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Well, I took it to a drive train specialist shop today and they didn’t want to do anything with it because they didn’t think it was bad enough yet. I guess I could throw more parts at it in the relentless pursuit back to perfection or just keep driving it 😅

Originally Posted by peterls
My money is on the center support bearing. There is no way to tell until you replace it. I had a similar problem with my LS and it also exhibited more vibrations at certain speeds, and more on acceleration or on uphill, and less or none on downhill. Replaced the center support bearing and vibration was gone.
Thanks for sharing your experience. Did you use an OEM or aftermarket center support?
Old 07-24-19, 04:15 PM
  #27  
Sin1UZFE
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Originally Posted by relentLS
Well, I took it to a drive train specialist shop today and they didn’t want to do anything with it because they didn’t think it was bad enough yet. I guess I could throw more parts at it in the relentless pursuit back to perfection or just keep driving it 😅



Thanks for sharing your experience. Did you use an OEM or aftermarket center support?
They didnt tell ya what was causing it?
Old 07-24-19, 04:20 PM
  #28  
relentLS
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Originally Posted by Sin1UZFE
They didnt tell ya what was causing it?
They drove it and they didn’t want to do any further diagnosis. They said it was safe to drive and reliable and would cost quite a bit to dig into so I took their word for it for now. 🍺
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Old 07-24-19, 04:21 PM
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Sin1UZFE
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Originally Posted by relentLS
They drove it and they didn’t want to do any further diagnosis. They said it was safe to drive and reliable and would cost quite a bit to dig into so I took their word for it for now. 🍺
IDK Id get a second opinion
Old 07-24-19, 04:28 PM
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relentLS
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Originally Posted by Sin1UZFE
IDK Id get a second opinion
It’d be a fourth opinion by now 😅 the Lexus specialist I originally had it at couldn’t find anything, I called another drive train shop and they just said they couldn’t help me with it lol. Hard to find good quality shops around here but I know of a few other good import shops in town.


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