When my Transmission Control Pressure Cable was out of adjustment, it caused -- among other things -- a "thunk" when shifting into "Drive", and harsh shifts from 3rd to 4th. Are you sure yours is adjusted properly?
A board member e-mailed me a file from the repair CD outlining the procedure for adjusting the cable (on a 201). I would be happy to foreward it along to you. Just let me know.
'92 Mercedes 190E/2.3 (247K miles/my daily driver)
'93 Volvo 940 Turbo Wagon (263K miles/a family truckster with spunk)
'99 Kawasaki Concours
'85 Jeep CJ-7 w/ Fisher plow (226K miles)'93 Volvo 940 Turbo Wagon
'53 Willys-Overland Pickup
'85 Honda 750F Interceptor
'93 Nissan Quest
'89 Toyota Camry Wagon
'89 Dodge Raider
'81 Honda CB 750F Super Sport
'88 Toyota Celica
'95 Toyota Tacoma
'74 Honda CB 550F