Hi Tinker,

I have a '91 190E with 145K mi. and I would recommend replacement of the governor gears. They're plastic and inexpensive and will keep you from shifting when they fail. Mine is a 722.4 transmission.

Please do not consider this as the only parts to replace. A search of this list will reveal others that some will consider more important than the governor.

Regards,

Randy Roeges