I did a search and could not find anything close to my problem. My tranny sometimes won't shift to 4th gear (I have a 4th speed auto). I have a 95 C220.

I got to the freeway and started accelerating but the gear reamined in 3rd thus the high RPM. I released the gas pedal and downshifted to third and back to D. Then it engaged to 4th. When it shifted though, it wasn't the usual kick we feel when shifting. It felt like the "clutch was slipping". I tested the car by shifting manually and it woked fine. If I'm in "D" it would sometimes take along time to go to 4th or not at all.

What is this.....

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95 C220