Hello everyone. I have recently switched my 1997 f150 S/C over to a 98 Frame and engine/Trans. Everything went pretty good except that I had to change the wiring going to the fuel tank and rear lights. The truck runs good but will not shift into any gear and has a flashing OD light.I checked all connections and found nothing. My question is ,are the trans wiring harness the same? I figured that the 98 would be close to the same as 97 but did have a few issues. Do I need to change the harness? I am getting a code of p0707 and again the OD light is blinking. It will not shift into any gear but 1st. I would appreciate any help on this issue. The trans shifted fine on the donor truck before the switch.
Regards dharris

 

I've been led to believe by Ford, on another matter, that the '97 and '98 were identical units. I don't know for sure but steps made for any other year than '97-'98 won't fit. So I was told that '97-'98's were a class of their own.

Good Luck.