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Old 03-17-10, 03:19 AM
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additude
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The transmission in my '97 LS400 died yesterday and my mechanic tells me it needs to be replaced. Not repaired. I am wondering what my options are between purchasing a new one if possible or rebuilt.

Anyone ever had to deal with something like this?
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Old 03-17-10, 04:51 AM
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you need one from a '95-97 LS400.
model A340e, strictly from the LS.
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Old 03-17-10, 05:31 AM
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Originally Posted by PureDrifter
you need one from a '95-97 LS400.
model A340e, strictly from the LS.
What does that mean "strictly from the LS." ? Lexus Service?

Thanks!

-Wes
Last edited by additude; 03-17-10 at 05:32 AM. Reason: Updated
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Old 03-17-10, 05:37 AM
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I think he means not from a GS or other line of Lexus.
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Old 03-17-10, 06:14 AM
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Thanks...I guess my head wasn't thinking in that direction.

Appreciate!

-Wes
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Old 03-17-10, 06:20 AM
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What kind of problems are you having, do you really trust this guy. It could be a simple fix. Are the clutch plates completely gone, did one of the gears or shafts give out? Is it just a bad sensor or something stuck in the valve body?
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Old 03-17-10, 10:18 AM
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Originally Posted by 7schulz
What kind of problems are you having, do you really trust this guy. It could be a simple fix. Are the clutch plates completely gone, did one of the gears or shafts give out? Is it just a bad sensor or something stuck in the valve body?
The trans will not go into any gear and is making a loud whirring noise.

-Wes
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Old 03-17-10, 10:30 AM
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Did you drain the fluid to see if there is a bunch of clutch particles in it or that it smells burnt?
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Old 03-17-10, 10:58 AM
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Mechanic says he checked the fluid, it was clean and to level.
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Old 03-17-10, 11:38 AM
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My guess would be something/particle is clogged in the valve body that is stopping oil pressure so your clutch isn't engaging. Doesn't sounds like an out-right transmission failure.
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Old 03-17-10, 12:37 PM
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Originally Posted by Thermactor
I've heard that a 1990-1994 LS400 will accept the sportier 1990-1994 SC400 transmission without fault. I was wondering about the same with the 1996-1997 SC400 trans and the 1996-1997 LS400.
Here's what price research on Lexus of Pembroke Pines showed up.
SC400 trans - 1997 - 1976.04 + 1000 core
SC400 trans - 1996 - 3982.95 no core
SC400 trans - 1995 - 2288 + 1000 core
LS400 trans - 1995-97 - 1974 +1000 core

3 different years of SC400, ostensibly from the same generation, three different transmissions and prices. Hmm....

the wiring and # of solenoids is different for the SC tranny, so while its somewhat possible, it's a significant amount more work than the same year car.

and afaik the earlier A340 wont work because the '95-97 LS uses OBDII diagnostics, which is tied into the trans as well.
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