what causes the Speedometer to stop working?

2001 FORD F-250
17,500 MILES
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SHANY1
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  • 1 POST
I just replaced the IDM in my 2001 F250 7.3L. When I took it for a test drive I noticed that now the Speedometer is no longer working. I've replaced all the fuses and the sensor attached the rear sensor is still intact. What else could be the problem?
Mar 24, 2012 at 1:16 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
IDM: Injector Driver Module-Could be the turbine shaft speed sensor or the speedometer head assy-
Mar 24, 2012 at 12:29 PM
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