Home Tips & Tricks 2005-2007 Ford F-Super Duty SPEEDOMETER AND/OR TACHOMETER STUCK OR JUMPING / BOUNCING...

2005-2007 Ford F-Super Duty SPEEDOMETER AND/OR TACHOMETER STUCK OR JUMPING / BOUNCING / ERRATIC

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Download Some 2005-2007 F-Super Duty vehicles may exhibit a speedometer and/or tachometer indicator issue. Symptoms may include intermittent, large inaccuracies, or jumping/bouncing/erratic pointers. ACTION Refer to the Service Procedure. SERVICE PROCEDURE 1. Verify there are no diagnostic trouble codes (DTCs). If there are DTCs present, follow the appropriate procedure in the Workshop Manual to clear the DTC and resolve the concern. 2. Confirm that the axle ratio and tire size are properly configured in the ABS module. 3. For a speedometer related concern, If no DTCs are present, the issue may be with any of the following components: • Cluster • ABS Module • ABS Speed Sensor • Vehicle Wiring • If the symptom is a continuous (non-intermittent) large inaccuracy, ensure that the axle ratio and tire size are properly configured in the ABS module. To identify the cluster as the root cause: