i just replaced the tranny in my 94 eb explorer about 8mos. ago, so yesterday i m driving, and could'nt move the truck until about 3000rpm's!! this sucks, i know that there was something else that i shoulda replaced along with the trans, i think it's like a.... 4hl barrel or something like that(i called a tranny shop). is there anyone out there that can help me with any info as to what this issue might be???

i got the same problem with my B2 mine doesn’t move until I reach 4000 rpm,I’m in the process of changing my torque converter since that’s what i was told by a trans shop
I’m still not convince that’s the problem but since it’s cheaper than a new trans. I will give it a tries

What does the fluid level? Are the bands adjusted the filters new?
Could be many things but sounds like a clutch or TC issue.