Hey everyone, i have a 1999 Mercedes ml320 and at first had a problem where it would drive fine until a certain gear change and then it felt like it slipped. It would shift but only after slipping atleast once around 3rd or sometimes 4th gear. Eventually after a longer drive the car would slip more often and then end up going into limp mode. First thing i did was change the tranny fluid and filter because the oil seemed a bit dark and very slight burn smell. Did not fix the problem though. I do and always make sure to have enough fluid in it. We then replaced the conduter plate and connector harness thinking this might be it and sure enough there was some issues. The harness had oil leaked into it so we cleaned it out and added a new one then we put in a new conductor plate. The old plate was cracked at the sensor part of it. We assumed these two things were the issues that caused the problem. We put it all back together again correctly, filled oil but now the car drives only in 1st gear. Still works in reverse but not higher gears. No telling if it still slips because it now wont upshift at all...whole new problems it seems. Almost like the car forgot how to shift..very rarly when i first put it from park to drive it does nothing. Does not switch gear at all and i press gas it revs but car does not move. But as i said very rarly for the most part it shifts fine from park, reverse, and drive. Just issue is it stays only in that first gear...goes on slow speed and high RPMs so its undrivable now...Any idea what could be causing this? Recently replaced other parts of car as well and tested things such as transmission control module, throttle position sensor, a new kickdown, and cleaned the mass airflow sensor..so far nothing. Connecting harness seems ok and dry still so belive it to be ok but cant be sure. Even thought i bought a faulty new conductor plate so got a different one to double check..ran my code reader so see what codes would recently pop up and i got the ones below in the image. The speed sensor code is gone now however but the solenoid a, b, c, and torque codes are all still present..plz help, i miss my car.
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