MTVR Speedometer way off.

[Navy dude]

My speedo shows nearly double my true speed. Not a huge issue in my mind but the odometer is running away at the same rate. Does anyone know what the issue might be? Can it be re calibrated electronically or mechanically somehow? Thanks guys!

 

[Elijah95]

It can be calibrated electronically via a truck scan tool and CAT ET dealer software and someone that knows what their doing to adjust the proper protocol


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[Navy dude]

Thanks, I'll investigate. I've been reading a bit on DATCON speedos have a few things to try. I am busy and out of town much of this week, so will get to it soon.