Setting arbitrary tire sizes for speedometer calibration

Testing new functions
banewby17
Posts: 4
Joined: Fri May 11, 2018 4:08 am
Vehicle: F150, 3.5L Ecoboost, 2014

Re: Setting arbitrary tire sizes for speedometer calibration

Post by banewby17 » Mon May 14, 2018 11:44 am

Yes, yes. The guide in the OP is what I followed. It does not work for my 2014 F150. Someone else mentioned the same problem in this thread.

Still looking for answers.

banewby17
Posts: 4
Joined: Fri May 11, 2018 4:08 am
Vehicle: F150, 3.5L Ecoboost, 2014

Re: Setting arbitrary tire sizes for speedometer calibration

Post by banewby17 » Mon May 14, 2018 5:32 pm

Dordogne wrote:
Sally wrote:i have done speedo correction with HP Tuners on a 2017 Ford F150 Raptor cause we put 35x12.5x22
after that i got wrench light with DTC U0422:00-2F in PCM and P160A:00-AF in TCM

The only way to fix the wrench light is re programming BCM with IDS and do Powertrain ->Service Functions -> relearn vehicle data with IDS.

dose anybody know a solution to succsesfull adjust speedometer?

thanks

M.
To all of you experiencing the P160A DTC, FORScan is now able to perform a "Module initialization/Relearn vehicle data" on the PCM. This seems to do the same thing that IDS can do:

Image

You need to set your desired tire size,restart, perform the "Module initialization/Relearn vehicle data", restart, clear P160A DTC and you should be good to go.

Apparently, some vehicles also need a TCM relearn performed.
SteveInWV wrote:I have a 2013 F150 and cannot get this to do anything with my truck. I just had 295/60 R20 Nitto Ridge Grapplers installed on my OEM 20" rims. I've tried changing the pre-canned settings, and a customer setting using the calculator, and no matter what I do, my speedometer is 3 MPH slow.
Any thoughts?
If it can be done with a tuner, which I have read can be done, I have to believe that it can be done with Forscan.
AFAIK, this can only be done on 2015+ F150s that use what I call the "current generation" of as-built and modules. Nobody's been able to get it to work on a 2014 and older model year F150.

In your procedure summary in this post, you mention "You need to set your desired tire size,restart, perform the "Module initialization/Relearn vehicle data", restart, clear P160A DTC and you should be good to go."

To what are you referring when you say "restart?" Do you mean cycle the ignition off then on, or do you mean close FORScan and reopen?

Just to clarify, thanks.

ke5adb
Posts: 1
Joined: Sun Aug 28, 2016 5:29 am
Vehicle: 98 F150 4.6

Re: Setting arbitrary tire sizes for speedometer calibration

Post by ke5adb » Fri Jul 06, 2018 1:28 am

On my 2000 F350 V10, I was able to change the value of rotations per mile in the ABS config. I also set the PCM to re-learn.

Shaun L
Posts: 6
Joined: Thu Feb 23, 2017 12:36 am
Vehicle: F-350, diesel 6.7 600, 2011

Re: Setting arbitrary tire sizes for speedometer calibration

Post by Shaun L » Sun Jul 22, 2018 4:19 am

Trying to figure out how to change my tire size on my 08 f250 can find any info anywhere if anyone has any insight on changing to a 37 inch tire that revs 560 per mile that be great thanks

Dordogne
Posts: 12
Joined: Fri Aug 12, 2016 6:21 pm
Vehicle: Mustang 5.0 2017

Re: Setting arbitrary tire sizes for speedometer calibration

Post by Dordogne » Wed Aug 08, 2018 9:32 pm

ke5adb wrote:
Fri Jul 06, 2018 1:28 am
On my 2000 F350 V10, I was able to change the value of rotations per mile in the ABS config. I also set the PCM to re-learn.
Interesting, did that change your speedometer? I would have thought that the sensor on the trans output shaft would be used.

Buzz360
Posts: 3
Joined: Mon Apr 16, 2018 10:37 pm
Vehicle: 2013 ford taurus SHO

Re: Setting arbitrary tire sizes for speedometer calibration

Post by Buzz360 » Fri Aug 10, 2018 12:47 am

Is 225/60/18 going to be 2208 or 2284?
2208 in hex would be 0x8A0
2284 in hex would be 0x8EC

I'm having a hard time with this for some reason. I have a 2013 ford Taurus sho

Dahveed
Posts: 1
Joined: Tue Jul 17, 2018 3:48 am
Vehicle: 2017 Ford Fiesta ST 1.6L Turbo 197 HP

Re: Setting arbitrary tire sizes for speedometer calibration

Post by Dahveed » Thu Aug 16, 2018 2:31 am

Does anyone happen to know which block this is stored in on a '17 Fiesta ST? I cannot see 726-12-01 in FORScan.

sirrepairsalot
Posts: 1
Joined: Sun Nov 26, 2017 5:54 pm
Vehicle: 2013 Ford F150 4WD

2013 Ford F150 4x4 5.0L Speedo Calibration Success!

Post by sirrepairsalot » Sun Sep 16, 2018 9:06 pm

Coming from Manitoba, Canada!
:lol: I don't know you personally Mr. Spreadsheet Maker, but you make good cookies!

Tried this on my 2013 Ford F150 and it worked like a dream. GPS says 100km/h, the speedo says 100km/h. The GPS says 110km/h, the speedo says 110km/h! Awesome work my friend! This is a great community of good people helping each other out. I be liking very much!... The only thing that surprised me was when I looked under the "BdyCM Module Configuration" (not as built) it shows tire size as "error". Don't think it makes a difference either way, but No P0160a codes, and it works like a charm. :mrgreen: Thanks again.

Would you know which block a 2006 Ford Fusion 2.3L 5 speed Manual would be under for speedo calibrations? Is there a master list of descriptions for these lines somewhere?

Thanks once more,
Chris!

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