Eric00GS3

I'm noticing a 1-2 lag in the tranny and am thinking of swapping a used tranny into my 2000 GS300.

I called the dealership and they said that there is a different tranny for the following 2nd gen time periods:

8/97-6/98
7/98-7/99
8/99-7/00 - part number 35000-3F510
8/00-1/05 - part number 35000-3F540 (A650E)

The manufacture date on my GS is 5/00.

Will a GS tranny from any of these time periods line up and work properly in my car? Dealership said it might work, but they can't say for sure.

Eric00GS3

Someone's got to know.........

Eric00GS3

Bump..........

ElitistK

iTrader: (4)

yes it's different because 01+ has e-shift on the gs300. 98-00 gs4 has e-shift.

but by all means they're both a650e.

Eric00GS3

Thanks for the reply. So are you saying that the gs3 98-00 trannies are interchangeable with each other?

jcat_350

well the obvious answer is to get the same trans that came out of your car.

the A650E will not work in your car because your ECU is not made to handle the E-Shift function.


i would assume there was some reason they updated the tranny twice from 98-00 and never updated the trans from 01-05 (98-00 gs400), i would go with the latest model (your production date) 35000-3F510

jcat_350

he has a gs3, but you are correct about the 01+gs3 and all gs400 sharing the a650

JeffTsai

iTrader: (1)

ALL GS share the A650E. Hell, all of the Lexus automatic RWD lineup of cars from 98-05 used the A650E. I've torn down a earlier generation A650E from 98-99 and compared it to the one out of my car which is an 05. They are nearly identical inside, the only real difference is how the valve bodies are setup.

dxb_8788

jeffTsai rulez

lexusondubs

iTrader: (9)

agreed way to go jeff !!

aliga

iTrader: (147)

i have a used tranny with lo miles, 700 shipped.

Eric00GS3

Thanks for the feedback.

Just to clarify. Since "all of the Lexus automatic RWD lineup of cars from 98-05 used the A650E," then would a 98-99 gs3 tranny work in my 2000 gs3? If I'm limited to the same year tranny, it's going to be tough finding a replacement.

Also, JCat says a 01-05 won't work in my 2000 gs3 due to the e-shift and JeffTsai says the insides of a 98-99 trans is identical to a 05. Am I to assume that even though the insides of a 01-05 look identical, it still won't work in a 2000 due to the e-shift?

jcat_350

just to clarify, i was not positive. i'd definitely take jeff's word over mine. It just seems like to me, the TCU from an e-shift model and a non-e-shift model would work differently.

JeffTsai

iTrader: (1)

Well, you have to consider the fact that the GS400 at that same year and time had e-shift. The GS300 98-00 did not have it. Then fast foward a few years the GS430 dropped e-shift but the GS300 01-05 recieved it. In my experience they are all the same transmission besides having a different bell housing and tail housing. The actual transmission is nearly identical for all RWD Lexus from 98-05.

IMO, the transmission SHOULD work just fine. What exactly is wrong with your transmission? Is it slipping or what? I would suggest you have that transmission rebuilt instead of replacing it with another used transmission....that's only if your transmission didn't blow up and destroy all the gears inside. Once rebuilt, you will have another 10+ years life at least. If you buy a used one, it might only have a few years left on it. My transmission builder does it for around $600-700 including parts(I know him so I get a hook up heh). I'm sure if you shop around you can find someone to do it for around $1k

Eric00GS3

Thanks Jeff!