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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Speedo Problems

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Old Nov 15, 2011 | 01:13 PM
  #1  
catbird7's Avatar
catbird7
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Speedo Problems

I have an 89 F-350 with a ZF-5spd and a 7.3 IDI diesel. Recently I had the flywheel changed from a dual mass to a single mass. Before making this change, the speedo worked perfectly, now it bounces all over the place. What happened? Did the garage (who did the work) break the cable or screw-up something else?
 
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Old Nov 15, 2011 | 01:27 PM
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Lazy K
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your speedo is cable driven so could be a few things. maybe the outer cable got kinked/dinged, maybe the little plastic gear on the end got damaged, maybe the inner cable needs lubed. Have a look at the outer cable for any signs of damage.
 
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