2005 freightliner century
Eaton fuller 10 speed smartshift transmission
Just purchase this truck, been on the road about a month now with it. Some days the speedometer meter work some days it don't. Like wise somedays the qualcom show I'm driving somedays I'm driving and it just show I'm off duty. The miles on the truck increasing and the tachometer work. So far I replace both speed sensors at the back of the transmission, wire harness from tcm to all sensors on the transmission including speed sensor, did continuity test on speed sensor harness going from the speed sensor to the ecm. What else would cause the speedometer and the qualcom to not show that I'm driving.
Speedometer not working
Discussion in 'Trucks [ Eighteen Wheelers ]' started by 7seriestv, Mar 30, 2020.
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The Fonzie technique!
Now if you can snap your fingers and chicks come running...Another Canadian driver, Rideandrepair, Kyle G. and 1 other person Thank this. -
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The most common causes of a speedometer that stopped working include are a faulty speed sensor, broken gear on the speedometer, damaged wiring, or a faulty engine control unit.
Have had cable come loose on transmission at the speed sensor.Another Canadian driver and truckdriver31 Thank this. -
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