ok where to start . . . .my friend blew her engine in her car .she bought an e- bay engine with 30k and had her boy friend install it . before the new engine was put in , the transmission worked fine . after install of new engine she had 22 transmission codes !! and the fan was running full time , id clear the codes , and they would reappear after 2 seconds . I looked at the wiring harness that hooks to the transmission ,and it looks correct . looks to me like the wires only reach in the way they are fashioned, so I assume they are correct . the only thing that was changed besides the engine is that he used the wiring harness that came with the new engine (and wiring harness that connects to the transmission , which also came with the new engine ) , and not the original wires that worked perfectly before . Thats all that he has admitted to doing , although I suspect more occurred . Since he wanted to change the fluid before realizing he needed special tools . here is the code list , anyone have any ideas ???? also o.d. will not function / 2005 mustang 4.0 automatic transmission
(PO)622
713
731
732
733
735
740
743
748
750
753
755
758
760
763
778
798
960
962
964
968
(P1)744

 

ha ha ha looks like im not the only one scratching my head !!

 

I know it's a 14 year old thread, but was this or similar issue ever solved by anyone else?