Saleen03246

My speedometer has been real wacky on my Roush car ... reading speeds about 50mph over what I'm currently doing. Had lots of work done to the car...including suspension, tune, new gears, etc. The check engine light indicated a P0720 and P0722 code (speed sensor). I reset the DTC codes and the check engine light went away, but the speedo is still wrong. Has anyone had a similar problem? If so, what's the fix?

ponysnake99

Wheels/tires and gears can throw off the speedometer calibration inside the car, a handheld tuner oranyone able to access your computercan adjust the calibration to match your mods and it should even out.