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

Transmission/torque converter issues?

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Old Aug 27, 2019 | 11:47 AM
  #16  
Beerad555's Avatar
Beerad555
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From: Indiana
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Originally Posted by YODAONE
Two other areas that merit attention;

At 170k Miles, the transmission shifter linkage and rubber isolation bushing require attention:

https://www.clublexus.com/forums/ls-...-bushings.html

And the transmission temperature sensor may be tired, so while you are in there, replace it.

See:

https://www.clublexus.com/forums/ls-...re-sensor.html
he reason I’m leaning more towards transmission or torque converter issues is because you don’t notice it when the car is cold only when it has been driven and up to temperature is when I noticed the shudder.
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Old Aug 27, 2019 | 11:56 AM
  #17  
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Sin1UZFE
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Originally Posted by YODAONE
One way to verify whether transmission,.... OR driveshaft, differential, half-shaft or wheel bearing related would be to run the engine with the transmission in drive while driveshaft removed.

I realize that this necessitate temporarily reinstalling the exhaust system to do, but isolates source of NVH - noise, vibration or harshness.

The transmission tailshaft bearing and rear differential are possible problem areas
Took it to another guy this morning, called me saying its the idler pulley. Told him to hold off, I wanna get the part myself.
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Old Aug 29, 2019 | 01:18 PM
  #18  
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mikaelse
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From: SWEDEN
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That one you can fix with a 10$ bearing and a wise . Bearing type seem to differ. Push it out and check type.
Buy a C3 grade ( increased play ) . It way be to tight after pressed in otherwise.
Buy a good make You have heard of. INA, KOYO, NTN, *** , SKF etc.
Take tensioner bearing in same way.
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Old Aug 29, 2019 | 03:22 PM
  #19  
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YODAONE
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Default Buy an oem part and call it a day

The bearing, shipping, machinist time to extract old and insert new bearing...not to mention the value of your time in discussion is more than the part.

The bearing might be staked into pulley which is another issue.

Order the entire assembly from the dealer.

Probably all bearings on serpentine belt driven accessories are tired.
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