ATX Electronics don't match up between years, help needed.

[Hans@GZP]

You will want to swap over your shift solenoids, temp sensor, and the kick down servo (the big black plastic piece). If your valve body is still good, it may be easier to just swap them since you have to remove it to swap the temp sensors (and the solenoids are bolted to it).

[DrGonzo]

The trans came out of a 92 Stealth.

Speedo gear is different as the 92 was mechanical as to where the later years are electrical.

Here is the for sale thread I had it listed in: 3000GT/Stealth International Message Center

As for the connectors I am not familiar with the 99 ATX trans but I know the TCU's are different.

[Hans@GZP]

Ah, if it's a 92 trans, make sure you have the matching axles to go along with it.

I have a good 98 auto trans if you don't want to mess around with it

[DrGonzo]

Yeah it's a true 92 ATX with the smaller axles.

[Dbeltran24]

Aww Crap. Smaller axles too. Seriously need to think about how I should proceed.

If I swap over the shift solenoids, temp sensor, kick down servo, speedo gear, and valve body, do I still need to get a 92 TCU or will a 99 TCU work then?

Valhallaz - I'll get back to you about the speedo gear adapter, since I might just get a different ATX at this point.

Hanz - How many miles on the 98 ATX? Has it been rebuilt? How much for it?

DrGonzo - Thanks for chiming in.

[Hans@GZP]

I pulled it out of a 98 SL with 112k miles on it. It worked just fine. I did a 5 speed swap on the car. $600 and it's yours. I'm not sure of the rebuild history on it.

The 99 tcu should work just fine with that trans after you swap over all of the crap.

[kormex]

The "kickdown switch" the one with the 4 " round plastic cover is just a switch and can be easily switched to your replacement transmission. BTW this switch tells the computer that there is a change in gear taking place and the computer then lowers the line pressure to what they call " reducing pressure" , this is to give you a softer shift ,since this transmission doesnt have accumulators.

The other plug that goes into the case is a oil temperature sensor inside the trans .
This can also be replaced with your sensor by removing the oil pan and just installing the one off your old transmission.

Warning !
If your replacement transmission is from before 93 and your car is 93 and later , then you need to replace the lockup solenoid with a 93 and up type 14 ohm resistance .( the earlier one has 4 ohms). this to prevent your computer from getting damaged.

A way to tell by looking at the outside of the trans is :
There is a 4 wire connector comming out of the transmission case , if the red wire has a black stripe on it then its a 93 and later , if it doesnt then its an earlier one.

Hope that helps .

[kormex]

Nevermind , I should have read the whole thread.
I just noticed that Hans had already replied with the same answers. BTW the the carrier assenbly can be replaced by removing the cover on the differential .

[Dbeltran24]

Thanks for all the advice from everyone.

I've decided to take my 99 ATX to a shop to have it rebuilt.

If anyone needs a 92 ATX, send me a PM. No sense in keeping what I don't need.

[Dbeltran24]

Update. Got the 99 ATX rebuilt and installed. My car is finally alive again.