Not sure what i should do with my 5r55e

[Mxminiracer99]

From a dead stop at shifts fine, but when you roll on the throttle it 50-60mph or push it through the firewall it down shifts and revs out that gear and wont shift till I let off half throttle, so irritating

 

[Josh B]

I cannot explain it to you sir, but I have known a lot of them to do that, maybe due to differences in factory settings and garage.
Seems to me they about always made you let off to grab another gear. My last automatic was a 70 Olds 455 Rocket, been a long while
My apology, that was in OK, in TN during the 90s and 2K I had a 77 Olds 98 auto with a 350 Chevy engine and an 80 Chevy LUV with a stick starting out and later an automatic till it died

 

[Mxminiracer99]

I have had other rangers and driven other rangers and had multiple vehicles and this truck just doesn't go, when I had first gotton the truck, it never lacked that bad, I got the truck for free, and fixed a bunch of issues and its been great, except it just has no pulling power when you hold it wide open, down low if definitely feels better after I rebuilt it. Like when im on the highway in 4th or OD the peddle feels like it can move from half throttle till wide open and wont change the rpm till its all the way down to the firewall, feels like its restricted after half throttle, if you role on the throttle the everything feels fine, I should have just bought a new reman trans, or im gunna travel and buy a manual trans swap and cut my losses, in just want this truck to be reliable for the next 5 years or so I can finish my 97 ranger LS prerunner build, maybe the tcm is messed up in my truck

 

[Josh B]

Mine pretty much does the same thing, and I most times just let it lug, but after thinking a minute here I think it may well actually be an RPM thing, at least mine may be
Whenever I keep the RPMs higher (not red lining for sure) through the gears it has plenty of pep.
However when my foot gets lazy I think maybe the truck does too

I am not at all certain if these remarks are anywhere near the cause, but for today it may be as close as I get