88 727 Torqueflight issues

[moparguy]

In a moment of auction madness, I bought a 1988 PowerRam 150 a couple of years ago. Among the issues it had was a bad auto. Well after installing a $100 kit (seals, bands, clutchs and plates along with a new pump bushing) it was working great. I drove it about 50 miles, and parked it.



Well after setting for a couple of weeks it now takes off in second. Pull the shifter to 1st, it takes off in 1st.



Once rolling after a second gear start, put it on the floor and it'll downshift to first.



My first thought is a sticky piston the valve body. I did go to great pains to clean every thing, used 6 cans of carb cleaner and I did take the valve body apart and cleaned all the passageways.



I'm not a transmission guy at all. I've done one other 727 and a Turbo 350 in the last 30 years. I do have a shop manual that I used to step me thought the process.



Any help is appricated.



Thanks, RR

 

[moparguy]

Just a bump, thanks.



RJR

 

[CrosbyJ]

maybe the linkage needs a slight adjustment,check for a vacum leak

 

[moparguy]

Crosby, I have messed with the kickdown linkage, but with no improvement. It will downshift to 1st when you ask it too without pulling the shifter to 1st once underway. Just wants to take off in second.



The crazy thing is it worked great till I parked it for couple of weeks.



RJR