Speedometer not working
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6th Gear
Joined: Dec 2022
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Speedometer not working
I have a 2000 f250 with no speedometer/odometer but I am stumped as to what it could be. No codes/lights and in forscan I can read the vss and all transmission speed sensors. I even took off the cluster and tested the grey/black vss wire at the c250b connector that goes into the cluster and I can measure the ac voltage go up and down while I’m driving. And I know it’s not the cluster because I bought a new rebuilt one and it still didn’t work.
This is what really stumped me: the only time the speedometer moved was in reverse and it would bounce up and down but now after I disconnected the rear vss and cleaned it it doesn’t move at all. How would that affect anything when I can read the vss accurately on forscan? After that I swapped the vss from another truck and still no speedo but can read on forscan.
Any help/suggestions would be greatly appreciated. I’ve also checked grounds at the cluster and every ground point on the truck.
Update: issue has been resolved the abs module was not converting the signal from the vss correctly had to get new one and everything is smooth
This is what really stumped me: the only time the speedometer moved was in reverse and it would bounce up and down but now after I disconnected the rear vss and cleaned it it doesn’t move at all. How would that affect anything when I can read the vss accurately on forscan? After that I swapped the vss from another truck and still no speedo but can read on forscan.
Any help/suggestions would be greatly appreciated. I’ve also checked grounds at the cluster and every ground point on the truck.
Update: issue has been resolved the abs module was not converting the signal from the vss correctly had to get new one and everything is smooth
Last edited by 5.4 4x4; Apr 16, 2025 at 11:26 PM.
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