Need Help - Explorer Not Shifting Up When Floored - Bigger Tires 295 45 20 and SCT Tune

[sh8ker]

Hey Guys! Hope all is well!

Need to help to identify the problem.
2014 explorer XLT Automatic
Bigger Tires 295 45 20
SCT Tune

What happens is when i floor the gas the RPM maxes at 6300-6400 rpm and stays there and will not shift up until i release the gas.

Is this because of the bigger tires or something off with the tune?

 

[peterk9]

I doubt it is due to the tires. They have a 3% diameter difference which is the generally accepted maximum variance if they replaced 245/60R18 tires.
I don't run a 'tune' so I can't comment on that.

Peter

 

[boominXplorer]

Retune it to stock and see what happens, only way to rule out the tune and easiest thing to start with.

 

[sh8ker]

Tried to return it to stock tune settings guys, unfortunatelly it's still the same. Any ideas?

 

[Kpwweb]

See if there are any codes?

 

[sh8ker]

Haaah, got it. It was the rev limiter causing it on drive. Increased it and its gone. Thanks nyway!