P1635 or U0422 in TCM or PCM after tire size change

[captainsdc]

I’ll try that, going larger until it codes.

[usernames13]

let us know how it works out for you

[desertcoyote]

per previous post. If you live in the Phoenix Az area, i might be able to help.

Hi - I'm in the valley (east) and been trying to get my 2019 F350 to accept my 37" tires - no luck no matter what I do, can't get rid of the wrench. Have to go into dealer next week for oil change, any chance they can fix it?

[usernames13]

I can fix it. Give me a call 6023693222 if no answer leave msg and I'll get back to you

[Kwieder]

2019 F150. I don’t see the PID for rev/mile. Anyone else have this problem? I don’t have TCM only PCM, is that where others are finding it?

[captainsdc]

Rickloreto:
I am working on my new tire size issues with my new 2019F150ltd. One weird thing is with sometimes clunky shifting from 3-4. A ford tech told just me it would learn-out after getting used to my driving or he could do it for $120! So I walked. Now that learning doesn't seem to be happening. You mention clearing the adaptive learning tables after changing tires . What service procedure is it and do you know if it also clears the learned transmission data?

[fordnick]

Rickloreto:
.... One weird thing is with sometimes clunky shifting from 3-4. ....

Sounds like a faulty shift solenoid. They can go bad because of particle buildup. Can't really be cleaned, need to replace the right one with the correctly tuned equivalent.

[captainsdc]

I did a clear of the transmission tables and it seems to have nearly cleared the problem although I did notice the bump in shifting up from 3-4 yesterday. I guess I’ll call it 98% fixed abd see how it goes.

[Sloishbob]

Hey sorry to beat a dead horse. Been poking around here looking to solve my problems with adjusting tire size maybe someone can point me in the wrong enough direction to fix it for me.
I have a 2012 f350 with the 6.7l
Gone through and adjusted tire size via circumfrence. All fine and dandy, except I have no option in config and programming for relearning the pcm. I see that due to the year on my truck there's no relearn for the tcm.
Any ideas are appreciated