Engine/Transmission (1994 - 1998) TPS what shifts does it control?

[Fordiesel69]

My transmission feels fine and does not slip, but I do beleive that during normal throttle accelerations, it upshift too fast. Also it like to go into OD lockup as well too soon. I know the TPS deals with TC lockup but how about 1-2-3 shifts? Does overdrive use the TPS reading as well?



How can my shift points be adjusted other than a valve body mod?

 

[BTanzini]

The manual says vehicle speed sensor is part of the speedometer pinion gear adapter located on the extension housing of the transmission (TAIL). I had 2-3 shift problems and replaced output sensor on tail of transmission with updated sensor worked fine after that. Manual says erratic-harsh shifts can be caused by plug transmission filter,high-low fluid.

 

[Joe G.]

The governor is different on the '95 with a 47RH than the '96 with a 47RE. The 1-2-3 shifts are controlled by a mechanical governor on the 47RH so the speed sensor has nothing to do with those shifts.



The TPS deals with both electrical shifts: OD and TC lockup.



Check this thread: https://www.turbodieselregister.com...mission-1994-1998/156901-tps-myth-buster.html

 

[BPonci]

You can do some mod to the valve body to correct you shift points to meet your needs. (springs and shims)