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

Too fast

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Old 07-03-19, 11:08 AM
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Chillymorn
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Default Too fast

Coming home from work on the hwy look down and I'm cruising at 100.

What made me look down was there was a very slight steering wobble .

Hmm..

Any thoughts?
Old 07-03-19, 11:44 AM
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Fit1too
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That is a built-in warning system letting you know to slow down. Mine has a different version that sits in the passenger seat and verbally asks me in a female voice, "Why are you going so fast?"
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Old 07-03-19, 11:59 AM
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EthanS
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My thoughts of most likely culprit would be a wheel out of balance. This could include abnormal/uneven tire wear.
A worn suspension component such as control arm bushing, steering rack bushing, ball joint, or wheel bearing might also cause wobble. But those issues are likely to also cause a sudden steering shift along with popping or knocking sounds when braking or turning (as opposed to straight line highway cruising steering wheel wobble). You're not noticing any new sounds, are you?

I would recommend having your front tires inspected and re-balanced as an inexpensive first step.

Final note: if this wobble only occurs at 100+mph, a suggested solution would be to refrain from driving at criminal speeds
Old 07-03-19, 12:31 PM
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Chillymorn
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Originally Posted by EthanS
My thoughts of most likely culprit would be a wheel out of balance. This could include abnormal/uneven tire wear.
A worn suspension component such as control arm bushing, steering rack bushing, ball joint, or wheel bearing might also cause wobble. But those issues are likely to also cause a sudden steering shift along with popping or knocking sounds when braking or turning (as opposed to straight line highway cruising steering wheel wobble). You're not noticing any new sounds, are you?

I would recommend having your front tires inspected and re-balanced as an inexpensive first step.

Final note: if this wobble only occurs at 100+mph, a suggested solution would be to refrain from driving at criminal speeds
Lol
I`ll keep that in mind.
Old 07-03-19, 04:56 PM
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spuds
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I had an issue keeping speed down too when I got mine,kinda takes off.
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Old 07-03-19, 06:01 PM
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+1 with the tire balance. Make sure the suspension is in spec and in good condition. The 2-GS's had catastrophic failures with worn ball joints and tie rod ends. Can't recall that with the 1-2 LS's, still an area to check though.
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Old 07-04-19, 08:08 AM
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Stroock639
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yea tire balance (and tire pressures) should be the first thing to check, worn suspension bits should mostly be considered if there's noises or other weird vibrations from going over bumps
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Old 07-04-19, 08:13 AM
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Stroock639
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Originally Posted by Fit1too
That is a built-in warning system letting you know to slow down. Mine has a different version that sits in the passenger seat and verbally asks me in a female voice, "Why are you going so fast?"
something must not be right with the car for her to even notice lol
Old 07-10-19, 08:06 PM
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Snakebeate
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Bent rims check suspension after that
Old 07-11-19, 04:04 PM
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Chillymorn
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Originally Posted by Snakebeate
Bent rims check suspension after that

Yea,
Could be bent rim
Or suspension but lets face it its 20 years old all suspension parts should be changed if I want it to ride perfect.

I'll just drive it nice. And slowly replace the suspension as time and money allow.but I think its the control arm bushings.

thats rhe first parts I'll replace.




Old 07-11-19, 04:23 PM
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spuds
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Ive seen motor mounts and driveline disc thingy mentioned before for that.
Old 07-11-19, 07:22 PM
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my control arms are trashed on the left side lol but my rims are shot also but the bent rims are more important for me to fix or get new rims than the arms atm 3 of 4 rims are bent

Last edited by Snakebeate; 07-11-19 at 07:26 PM.
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