How do you calibrate the speedometer on a F-150 that has no gear on the tail shaft housing of the tranny?
I just have a plate on the side on the tail shaft housing of the tranny to cover up the hole were one would go.
All of my speed Info for the PCM(EEC), speedometer, odometer, Speed control and RABS comes from the VSS sensor on the top center of my rear end housing.
All of my 1995 Truck wiring diagrams and manuals support this but gives no clue on calibrating the speedometer.
Do you replace the Speed Sensor Ring in the rear end with a different one?
Here is what the Service Manual from FORD says.