• NAXJA is having its 18th annual March Membership Drive!!!
    Everyone who joins or renews during March will be entered into a drawing!
    More Information - Join/Renew
  • Welcome to the new NAXJA Forum! If your password does not work, please use "Forgot your password?" link on the log-in page. Please feel free to reach out to [email protected] if we can provide any assistance.

Tranny Problems

philjeeper

NAXJA Forum User
The AW4 stopped downshifting the other day it only shifts at the certain speeds it supposed to shift at. You can floor it all you want but it just stays in the same gear. I'm wondering if i need a new tranny or if it might be a sensor or something ?
 
Could be the throttle position sensor (TPS) - there are a few threads out there about this, google for "tps transmission shift inurl:naxja.org" and they should pop up.
 
Pull the in-line fuse to the TCU, drive it shifting manually, if the problem persists it is mechanical/hydraulic in the trans, if it shifts Ok manually, then electrical problem--TCU, wiring, solenoids, NSS (it does more than keep the engine from starting in gear), and most definitely the TPS should be tested.
 
Back
Top