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Transmission shifts hard.

6K views 6 replies 2 participants last post by  autotune 
#1 · (Edited)
I bought a 1998 tracker about a month ago. I have fixed all the problems with this forums help. I have one last problem I hope. It has a rebuilt transmission and it shifts hard,I have been told that is sign of a good rebuild. I want it to shift soft any ideas how to make this happin. 1998 chevy tracker 1.6 4x4 auto 16 valve. 3 speed.
 
#4 ·
ok
the tranny takes 3 inputs for shifting.
1: throttle cable called TV or kick down. delays shifting or kicks down 1 year to pass.
based on throttle angle.

2: vacuum modulator, shifts car based on load.
if load is light and modulator signals heavy , shifts will be hard.
bad vac. mod. or someone put in non kick color coded vac, modulator. or is bad. the do that alot.
3: governor, measure speed, and shift by RPM or SPEED. of tail shaft.

those are the external controls. besides the shifter.

the 4sp has a easy/ hard switch so that is not it. called POWER.

TV has a detent in the rear of tranny
this valve must move indirect proportions to the gas foot.
if not the the valve is stuck or cable jammed or the like.

cheers
 
#5 ·
tranmission shift hard

Autotune or anyone. Can you tell me what kick color coded vac, modulator I need for this tracker. I just want a smooth shift. Just a stright forward tracker stock, No off road Just a dailey driver. (1998 tracker 4x4 1.6 16 valve auto)

Part number would be nice.
 
#6 ·
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