GX2200 Posted November 29, 2020 Share Posted November 29, 2020 Hi. I just bought a Legacy GX2200 4EAT model 1990. I got this issue that transmission is stuck at first gear when engine is cold. after 1min of driving like this - transmission resumes normal operation. This happens also when ambient temperature is above 30C. ATF level is OK. Could it be a faulty temp sensor? Appreciate your advice. I couldn't find a relevant thread before posting. Link to comment Share on other sites More sharing options...
wtdash Posted December 6, 2020 Share Posted December 6, 2020 Hi, Since you're non-USDM, I'm only guessing. Does the AT Temp light flash 16 times when you 1st start the car? This indicates a stored code in the transmission's computer (TCM). The flashing isn't the code; you'll need to search online for the process to retrieve the code I would change the ATF (3 drain>refill>drive cycles to get it mostly replaced as 1/2 is stored in the torque converter) anyway. The temp sensor could be the issue. Maybe find an online FSM/factory service manual to see how to test it. see attached link. Link to comment Share on other sites More sharing options...
GX2200 Posted December 8, 2020 Author Share Posted December 8, 2020 Hi wtdash, thank you for your answer. please see attached info - You can see how the temp sensor is connected to the TCU (table line 4). where is the TCU located? Do I need to remove the dash? Link to comment Share on other sites More sharing options...
wtdash Posted December 8, 2020 Share Posted December 8, 2020 Hi, In the USA, LH drive cars, it's up under the dash...usually above the brake (and clutch) area. Might need to remove the lower panel, but not the dash. Doesn't that book tell you? Otherwise, you'll need to Google it. Or use that link I included - if it references your model. Td Link to comment Share on other sites More sharing options...
GX2200 Posted January 3, 2021 Author Share Posted January 3, 2021 anyone familiar with this component (in pic, over the right fender of Legacy GX2200 1990')? could it be related to the gear issue? how to test it? Link to comment Share on other sites More sharing options...
wtdash Posted January 3, 2021 Share Posted January 3, 2021 https://www.scoobyenthusiast.com/subaru-components/subaru-automatic-transmission-solenoid-dropping-resistor.html#:~:text=The%20dropping%20resistor%20works%20with,portion%20of%20its%20duty%20cycle. Link to comment Share on other sites More sharing options...
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