Truck runs fine and achieves 3rd gear at about 25 mph as the Haynes Manual says it should. Problem is that it does this even if I have the accelerator floored. I can't hold first gear past the normal point for light accelerator, same goes for 2nd gear. Further, I can't get a downshift from flooring it at cruise speed in any gear.
As I understand it from the manual, there is no vacuum involved with this engine/tranny combo but rather it is all mechanical. I would appreciate a confirmation on that fact. If that is the case, it would seem that there is a significant adjustment to be made with the throttle rod.
What shift points (in Mph, no tach on the truck) should I be looking for when the accelerator is floored? How sensitive is the process of adjusting the throttle rod? Can I overdo it and if so what is a suggestion for amount of incremental adjustment until desired result is achieved?
Any other thoughts are appreciated. Have learned much reading all of the posts, thanks.
P.S. I do have known vacuum leaks that are occupying my time, but thought that had nothing to do with the tranny on this truck.