speedometer calibration

[paul joplin]

I have a 2002 Ranger that had a 3.55 gear ration. I replaced that with one that has a 4.10 gear ratio. The dealership can't figure out how to calibrate it properly so the speedometer gives a correct read out. Any ideas?
Thx
Paul

 

[Toms01PSD]

I have a 2002 Ranger that had a 3.55 gear ration. I replaced that with one that has a 4.10 gear ratio. The dealership can't figure out how to calibrate it properly so the speedometer gives a correct read out. Any ideas?
Thx
Paul

The dealership should be able to hook up the scan tool and change it the same way they can change your tire size for proper speedo calibration. Try another dealership. Another guy on here had his done for like $75 or so. If another dealership says they can't do it, Superlift makes a module to correct for tires and/or gears.

 

[paul joplin]

thank you.
I'll make some call to other dealerships.
Paul