Speedometer/odometer not working

MARKCR

MEMBER
2008 KIA SPECTRA
2.0L
4 CYL
2WD
AUTOMATIC
160,000 MILES

After a few minutes of driving the speedometer will go to zero and the odometer will stop registering. So far I've replaced both speed sensors on the transmission, the wheel sensor, and the cluster. I place my diagnostic computer on the vehicle when the speed/odometer quit working and I still get a speed signal to the OBDII Port. After a few minutes of driving, the speedometer will quit working. So far I have tried replacing the two speed sensors on the transmission, the instrument cluster, and the wheel sensor. I have also placed a diagnostic tool on the vehicle and when the speedometer goes to zero, there is still a speed reading to the OBDII port.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

Hello,

It sounds like the wiring from the speed sensors (pulse generators) or TCM module is out. here are wiring diagrams and a guide to help you test the wiring with the TCM location. I would check the electrical connector for corrosion before replacing it.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

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