came to us with a shudder in 2,3,4,5 under light load. pulled it out unit looked clean. we put an epc and torqe converter and a computer in it. We also got a used valve body this fixed a lot of the problems
no codes
Problem
Now we have a shudder just going in to lock up in 4th and 5th. once the pwm comes on completly no more shudder. we have never had any codes. I checked the cooler flow and it is good. There is no book for this unit so any advice would be great.