Speed sensor keeps failing randomly

Volvo_780 · Dec 16, 2022

I have 2011 mack cxu613 deleted having this issue my spend stops working cruise stops working and engine break stops working randomly if I turn the truck off everything goes back to normal within 10 miles it fails again sometimes I can drive 50 miles I replaced speed sensor and still having the same issue need your help

'88K100 · Dec 16, 2022

I dont know,,i have company truck, speedometer quit working so no governor working and odometer not keeping score. I assume bad connection on mine since originally speedo would quit on wet roads and come back on dry road.

VWbeagle · Dec 18, 2022

We had a truck that had similar issues come through our shop. Turned out to being a tiny magnet from a speed sensor was stuck on the tone ring at the trans output. Every time the magnet would come around to the sensor it shut off cruise, throwing random codes.

Volvo_780 · Dec 19, 2022

Yeah replaced the speed sensor still having the same issue sometimes it just does it with the truck idling

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Speed sensor keeps failing randomly

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