While driving today, I had a down shift problem in my 67 camaro which has a 700r4. As I gave it throttle to downshift "passing gear", it wouldn't shift down. The engine also started sputtering as I gave it full throttle and it wouldnt down shift.
As I left the next light I manually shifted the gears and it shifted fine, put it back in drive '4th gear' and punched it 'to downshift and it did the same thing. engine starts to sputter and wont kick down. I checked the tv cable when I got home and it seems to have full pull when full throttle. Checked the fluid level 'good'. Can worn out fluid do this or tranny getting hot? Or could it be a torque converter problem? I need some help on this one. I just dont to get ripped off just in case I have to take it somewhere.