Have you tried adjusting the Throttle Valve cable (commonly called the kickdown cable) at the throttle body? If maladjusted it will cause your AW4 shifting points to be all over the place. Takes no tools and about five minutes to do.



1: Push in and hold the release button
2: While holding in release button, push "conduit" in as far as it will go
3: Release the button.
4: Rotate the throttle to wide open, either with a helper pressing the gas pedal or hold the throttle wide open with the linkage.
5: The cable should ratchet out to it's correct position.
6: Your TV cable should now be properly adjusted.
7: Test drive.

HTH