new pcm,now shifting prob,no reverse

[wynndaddy]

hi havent been on in awhile but i have a problem and im sure someone on here knows the answer(i hope mark reads this).i had a bad pcm and changed it but then had shifting problems.so i get another pcm same prob.im not real sure that i got the right pcm though.my original pcm had a code on it that said dcp-202and below that it was f6tf-12a650-ayg but when i tried getting a new one the computer showed two diffrent ones,one with dpc-202 and one with f6tf.well the company that rebuilds these said i needed the f6 even though my original said 202.it seems to me that the torque converter is not locking-up.forward gears shift way to soon and bog the motor and reverse is barely there, pretty much wont pull at all.my question is can the pcm cause this and does anybody have any ideas on which pcm is the right one for my truck.also could i have the pcm i have now flashed for the codes if it is not .i guess it would help if i told what the truck is,its a 97 250 7.3 e4od 4x4 crew cab,any help or ideas would be appreciated thanks

[mschn99]

i cant garantee its your problem, but yes, a pcm could cause your issues if the programming is not correct

[wynndaddy]

hey mark thanks for the reply.i think i have the wrong computer all together it just doesnt make sense to me to have a diffrent # than the oem.i didnt put this in the original posting but i didnt have an issue before the swap.i tried my edge and the pcm locked down on me.thats the reason for the new pcm.

[Eric B]

You might have the wrong computer but that has nothing to do with reverse, It is controled by the manual valve only. Does the tranny slip in manual low?

[wynndaddy]

hey thanks for the responce.well i dont have the wrong computer i got one from the dealer and its the same thing.i just cant believe that the tranny and the computer would go at the same time.as far as slipping in first i dont know if you would call it slipping.when you put it in gear it goes in normal and pulls but just doesnt have the power and torque that it should,i even tried holding
the brakes tring to get it to slip.im wondering if it could be a relay or selanoid or maybe torque converter