2005-2007 Ford F-Super Duty Stuck or Jumping/Bouncing/Erratic Speedometer and/or Tachometer

STUCK OR JUMPING/BOUNCING/ERRATIC SPEEDOMETER AND/OR TACHOMETER

FORD: 2005-2007 F-Super Duty

ISSUE

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: ... Download File PDF


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