Discussion Starter · #1 ·
I was following the instructions for changing the trans fluid for a newer Super Duty.I drained the torque conv. and pulled the pan out to clean it.I reinstalled it filled it with 8 qrts. It said to start it with the rear return line off and clear hose into bucket. After 40 seconds running in gear it started to shake and idle real rough. So I shut it off and I put 4 more qrts. in. I started it, put it in reverse and it did the same thing.I topped it off and all is fine now. I was just wondering if I hurt the trans? What made it idle so bad , did the torque conv. lock up?