Sadly this could be MANY things from a vacuum leak, to a bad injector, to a burnt wire to many other things. Replacing the sensor is normally not the issue.
They don't last forever anymore and are not cheap, the other issue is buying quality timing parts, Ford has discontinued most of it. So you go through the hassle of rebuilding for it only to fail again.
1.25 should be good, I went with a slightly wider tire as I like my paint and mud flaps as i like my frame...lol she does good. if you look though my pics you will see my 2010 clone with the spacers.
Oem rims or rims with pockets for the studs, i would not go more than 1.25".... 1.5 max.... on my black truck i went 1.25 front, and 1.5 back, was perfect.
Welcome, Good info here but slow. Check the trans fluid level and condition, These trucks are old..... things don't last forever any more. check coolant level, check belt and fan operation, check fan and service history.
Either the button is bad, the module mounted in the white box under the shifter is bad OR more common is people spill drinks, cleaners and what not drips under the trim and corrodes the contacts on the shifter module under the console....