Ive got a 1995 f150 4.9 4x4. I have had this random code on and off for almost a couple years now. I'm getting memory code 637 and 111 system pass. I have an older actron cp9145 that can scan and give live data. It says trans fluid temp above max voltage -40 indicated. According to my tool, my TOT was 103 degrees and my voltage was 2.3-2.4 during my test. SO, I'm wondering what is the cause of this code. Trans has about 20k miles on it. While my 4.9 is still great at 195k. I disconnected my battery 2 weeks ago and did the test yesterday. Seems to shift ok, but I have 3.55s with 33's on it now. (Regearing to 410s real soon) this gonna hurt my e4od? Fix? and thanks

 

And not sure if its related, but when my transmission warms up, when I go in reverse it SLAMS hard sometimes. Once it even died. When its cold, it goes in reverse smoothly.