Erratic speedometer
#1
Erratic speedometer
1999 Ram 3500 SLT Quad Cab Duallie, Cummins, automatic 2wd
I changed my speedometer sending unit/sensor (sensor BWD S8023)due to the speedometer being erratic(bouncing about 25 mph) above 30 mph.
It is doing the same thing again after only maybe about 300 miles of use!
Could this be a bad replacement sensor or something else in the system?
Thanks
I changed my speedometer sending unit/sensor (sensor BWD S8023)due to the speedometer being erratic(bouncing about 25 mph) above 30 mph.
It is doing the same thing again after only maybe about 300 miles of use!
Could this be a bad replacement sensor or something else in the system?
Thanks
#2
Registered User
I take it the speed sensor you're talking about is the one located on the top of the rear differential. If you have 4 wheel ABS then you also have sensors on each of the front tires as well. You'll see the sensor wire if you do.
#4
Registered User
You should have one on the top of the differential housing too. It can get dirty or covered in metal shavings or just quit and it reads the tone ring on the differential for speed.
#5
BTW- all the dash fault indicators clear as normal before start-up.
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