Originally Posted by Crosley
Does the cable have any slack in it with throttle at the closed position?
If the minimum cable setting is not enough, the trans will go into "fail safe " mode IF the fail safe check ball is installed. This fail safe mode will cause high RPM shifts like WOT and the shifts will be firm.
You may also have a worn out valve bore for the TV valve in the valve body. Oil pressure can get behind the inner TV valve and force it over to MAX stroke... that will also cause late - firm shifts like a WOT
Thanks crosley, I will have to check in the morning to be sure. Whats strange is this all started happening over night. When I first put the trans in the truck it had problems like slipping in gear and flaring between shifts. Adjusted the tv cable and it seemed to fix the problem. Then one cold mornimg on the way to work it just started hanging in gear but would finally shift. It progressed to only shifting high in The rpm range with in the same day.