bharch99

glad to hear that its working out for you! I actually think i fixed my problem as well as this weekend as i was going over my wires and noticed that my knock sensor plug looked a tiny bit crooked. so i unbolted the sensor and it looks like my sensor wire wasn't fully plugged into the sensor on the engine. Only one half was clicked in to the sensor, so i clicked it totally in and so far so good. I cannot say for sure that that was it but the light wasn't on for awhile and it's still not on...so fingers crossed that i'm still going good. I hope your problems continue to be a thing of the past as well.

thats a good question about the torque converter, i would think the bigger converter would take more to move to it but honestly i'm not sure how much bigger that one is compared to the one removed. I would just make sure you have enough fluid in it if it has a bigger converter then it may need more fluid to shift correctly. Man, I'm sorry that it's such a crapshoot for what you problem may be but I'm super glad that you keep posting updates to what's working and what's not. i get on so many of these forums to read past problems and people suggest things and then you never hear back for what worked and what didn't, you never find the answer because they never post anything else lol! At least it's running and will get you through the winter probably as well.

still working ok for you with the new TCM and tranny?

i hope this fixes it for you, also one other thing to add to mine is that when the light is flashing, as long as i drive the car over like 60mph, the thing rides in OD all day long, its usually slower speeds in between 30-50 that its acting up and holding the gear and hard shifting and so on, as long as i'm on the highway, going over 60, it drives fine for me...please let me know if swapping out, fixes it...if it doesn't then i'd def say that yours is obvs a sensor or ground or something that's waacked out.

I feel you on this issue, i think i have the same ghost AT Temp problem....so I put a new trans harness on the trans, it was like 225$ from subaru, the reason i did this is because my trans was rebuilt by the factory around 40k miles ago (even though the car is 99 forester, i was noted on the car fax and the tranny has the rebuilt plate riveted on it still) so i know it's worth keeping...at the same time i put a new harness in i replaced the at temp sensor that sits in the pan submerged in A/T fluid. I was able to get the light from coming on as frequently as it used to but similar to your problem, it does still come on every once in awhile. I can't figure out what causes it, I've done the secret handshake spoob, and it just says at temp sensor but i already know this...so that's no help...I've also replaced my TPS with a brand new one from Subaru and checked all the solenoids in the trans pan and even picked up a second TCM like you and it solved the problem for a long time until it came back and now it does it when it wants to....i can almost be like coasting abt to stop then give it gas, and it's like i catch it in between down and upshifting and it'll set the light off, i think it's electrical in some way but really i can't tell...it doesn't do it every time but i could have just started the car and go not even 2 miles down the road and the light comes on, it's still cold! and it says AT Temp...so i know it's not the sensor this time, I've checked all grounds and even made more grounds on the engine and tranny to help...i wish i could offer advice but I'm almost in the same boat...I'd just say to check your grounds if you did anything with cables and like was already mentioned, make sure the plugs are tight together...