A/T Trans kick down issues - cable

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May 15, 2012 | 01:03 PM

tashier

Thread Starter

Member

Joined: Aug 2011

Posts: 120

From: Beaverton

A/T Trans kick down issues - cable

Over the last several months I've been trying to get this A/T trans to shift correctly. I've tried snugging up the cable a little and it seemed to shift hard, then I loosened up the cable and it seemed to shift better except now it downshifts at awkward times. Seems opposite. Loosening the cable should reduce the downshifting correct? The scenario would be slowing down at an intersection, rolling slowly through a right hand turn and then very gently hitting the gas. It immediately downshifts and then upshifts back to the same gear.

May 15, 2012 | 06:24 PM

JimBlake

Super Moderator

Joined: May 2006

Posts: 18,398

From: Wisconsin

I don't know automatics really well, but I'll bump this for you.

I think the cable should be adjusted so the the lever on the transmission just begins moving immediately when the throttle begins opening.

How about dirty/corroded cable with excessive friction inside it's housing? Then the transmission lever won't move responsively with the throttle.

What kind of ATF and how clean is it?

May 15, 2012 | 09:40 PM

Roader

Been Around A Long Time Member

Joined: Jul 2011

Posts: 1,008

From: Denver

From "http://techauto.awardspace.com/transmission.html":

Quote:

Only for the computer controlled transmission. The transmission detects pedal dept via two points. One at the TPS and the other at the transmission. If the deeper you press the gas the less harsh it becomes then the problems lies on the out-of-adjustment at the transmission throttle cable.

Probable solution: Using a wrench, adjust the transmission throttle cable in small increments and test drive. Tip: The more the slack the harsher the shift. If this does not solve the problem then it could be a shift timing or other problems as expressed below.