I know there have been some post regarding the downshift linkage but most are pretty old, and I have some more specific question about it.
First of all, my original issue was that I had no power and no throttle response. It was also shifting way too early, and would rev at very high rpm around 45-55mph. There was also no downshift at any speed if I mashed the pedal.
When I adjusted the kickdown linkage, I set it so the back edge of the slot on the rod was resting against the throttle stud, with throttle closed and kickdown lever all the way forward. Then I added a return spring which it did not have before. After these adjustments, there was a huge difference in power and throttle response, especially from a stop. The transmission also seems to be progressing through its gears.
The remaining issues im having are that even though it is progressing through the gears, it still doesnt seem to be right. The shift from first to second is very soon with a large decrease in power. The shift into thrid is barely noticeable at times but im pretty sure it is shifting but it still revs very high but at higher speeds of about 50-65mph or so (im not 100% sure cause my spedo is broken). Then im still having the issue of not down shifting at all. If i am in 2nd and floor it pretty much nothing happens, if in 3rd very responsive cause of high rpms but no down shift.
My intial thought is that maybe the kickdown lever does not have the full range of motion from all the way forward to all the way back. Since I set it in the forward position, im guessing that it not being able to go all the way back is the issue. So my question is, am I right? If the lever is not going all the way back, will this prevent it form downshifting, and be the cause of shifting too early? I havent had time to check the range of motion on the lever yet but plan on doing that.
I was also reading about the kickdown band adjusting screw, which is located on the transmission near the kickdown lever. What does this do? I havent been able to find a decent explanation. The chilton manual gives specs for how many turns to adjust it based on year and model but deosnt give much explanation as to what it does/changes. Could this be an alternative or additional way of adjusting the downshifting?
First of all, my original issue was that I had no power and no throttle response. It was also shifting way too early, and would rev at very high rpm around 45-55mph. There was also no downshift at any speed if I mashed the pedal.
When I adjusted the kickdown linkage, I set it so the back edge of the slot on the rod was resting against the throttle stud, with throttle closed and kickdown lever all the way forward. Then I added a return spring which it did not have before. After these adjustments, there was a huge difference in power and throttle response, especially from a stop. The transmission also seems to be progressing through its gears.
The remaining issues im having are that even though it is progressing through the gears, it still doesnt seem to be right. The shift from first to second is very soon with a large decrease in power. The shift into thrid is barely noticeable at times but im pretty sure it is shifting but it still revs very high but at higher speeds of about 50-65mph or so (im not 100% sure cause my spedo is broken). Then im still having the issue of not down shifting at all. If i am in 2nd and floor it pretty much nothing happens, if in 3rd very responsive cause of high rpms but no down shift.
My intial thought is that maybe the kickdown lever does not have the full range of motion from all the way forward to all the way back. Since I set it in the forward position, im guessing that it not being able to go all the way back is the issue. So my question is, am I right? If the lever is not going all the way back, will this prevent it form downshifting, and be the cause of shifting too early? I havent had time to check the range of motion on the lever yet but plan on doing that.
I was also reading about the kickdown band adjusting screw, which is located on the transmission near the kickdown lever. What does this do? I havent been able to find a decent explanation. The chilton manual gives specs for how many turns to adjust it based on year and model but deosnt give much explanation as to what it does/changes. Could this be an alternative or additional way of adjusting the downshifting?