Transmission shift issue
1994 F150 5.0 4r70w
My transmission has been acting weird. At first it would shift and act like it was in neutral then jump back, or switch back and forth between two gears. I replaced the shift control solenoid and lost overdrive, but now the shifting issue is fixed for the most part. At light throttle sometimes it downshifts like its accelerating but doesn't go any faster. Also if I give it alot of gas it has trouble shifting. There's a small vacuum leak coming from the ac switch. Could the vacuum leak or a bad vacuum canister cause this? Or any other ideas?
My transmission has been acting weird. At first it would shift and act like it was in neutral then jump back, or switch back and forth between two gears. I replaced the shift control solenoid and lost overdrive, but now the shifting issue is fixed for the most part. At light throttle sometimes it downshifts like its accelerating but doesn't go any faster. Also if I give it alot of gas it has trouble shifting. There's a small vacuum leak coming from the ac switch. Could the vacuum leak or a bad vacuum canister cause this? Or any other ideas?

