Transmission Valve Body
I have a 92 300E with 169k. Recently, while driving down the freeway it will shift into nuetral. Sometimes it won't shift into 4th gear either.
I talked with a few techs and they suspect the valve body in the tranny is clogged and should be cleaned out. They also mentioned this is a complicated device and not a job for a DIY'r.
Does anyone know about this?