1994 Mercedes c220's transmission.

[ericnguyen]

Dear friends:

My 1994 Mercedes c220 has a strange problem with its automatic transmission. Whenever the car is started (either cold or hot) and driven, the transmission seems to get stuck at gear 1 or 2
unless I try to increase its RPM to about 2800. Once the RPM reaches 2800, the transmission shifts perfectly well at all gears afterwards. It that a normal behavior for Mercedes 722.4 transmission?

Does my car's automatic transmission has some modulator that can be tweaked to improve shifting behavior?

Thank you very much for your help.

Best regards,

Eric