ZJTAY

Hello, was wondering if someone might have an idea of what's goin on with my zj. It drives totally fine but when I am in 1st it stays in 1st too long before it shifts to 2nd. My scanner read a Po740 code and I replaced the TPS which I heard could sometimes cure this. The code went away but that long drawn out shift is still there. My Throttle Valve linkage seems to be in sync with the throttle. Anyone?

ol"blue

Welcome to CF. I found that code is for no torque convertor clutch lock up. That should only happen around 45 MPH, and it almost feels like an extra gear when the RPM's drop. Happens whether in OD or not. So it shouldn't be the cause of your issue.

As for your other issue;
This is from the ZJ FSM:

Checking Throttle Valve Cable Adjustment
(1) Turn ignition key to OFF position.
(2) Remove air cleaner.
(3) Verify that lever on throttle body is at curb idle
position. Then verify that transmission throttle lever
(Fig. 265) is also at idle (fully forward) position.
(4) Slide cable off attachment stud on throttle body
lever.
(5) Compare position of cable end to attachment
stud on throttle body lever:
² Cable end and attachment stud should be
aligned (or centered on one another) to within 1 mm
(0.039 in.) in either direction.
² If cable end and attachment stud are misaligned
(off center), cable will have to be adjusted as
described in Throttle Valve Cable Adjustment procedure.
(6) Reconnect cable end to attachment stud. Then
with aid of a helper, observe movement of transmission
throttle lever and lever on throttle body.
² If both levers move simultaneously from idle to
half-throttle and back to idle position, adjustment is
correct.
² If transmission throttle lever moves ahead of, or
lags behind throttle body lever, cable adjustment will
be necessary. Or, if throttle body lever prevents
transmission lever from returning to closed position,
cable adjustment will be necessary.

Throttle Valve Cable Adjustment Procedure
(1) Turn ignition switch to OFF position.
(2) Remove air cleaner if necessary.
(3) Disconnect cable end from attachment stud.
Carefully slide cable off stud. Do not pry or pull
cable off.
(4) Verify that transmission throttle lever is in
fully closed position. Then be sure lever on throttle
body is at curb idle position.
(5) Insert a small screwdriver under edge of
retaining clip and remove retaining clip.
(6) Center cable end on attachment stud to within
1 mm (0.039 in.).
(7) Install retaining clip onto cable housing.
(8) Check cable adjustment. Verify transmission
throttle lever and lever on throttle body move simultaneously.

ZJTAY

Thank you for the helpful info Ol' Blue. I'm gonna try to get one of my lazy friends to help me verify that the tranny lever and throttle cable are moving simultaneous.

dave1123

Hey Blue! You are always there when I guy's in trouble! How much time do you spend doing the research before answering? This is dedication! Nice to have you in my world!!

Old Retired Fart with a passion to share.

ol"blue

Hey Bud. I've learned a lot from being on here for years, and from working on vehicles before that. I've had a ZJ and own a WJ, and have some FSMs. So if I have an idea of the issue, I just need to look it up and post the correct response if I don't know. I hate to give incorrect information.
I'm glad to be of help when/if I can.