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Got a 1999 Ford F-250 7.3 truck was driving great until Speedo stopped working and od started flashing then I blew my trans so I got it rebuilt 3000 later and the Speedo isn’t working and od still flashing and it’s shifting funny my buddy said it needs a Speed sensor so we replaced it I’m still getting the same code and Speedo still ain’t working and od is still flashing trucks shifting funny won’t down shift on highway any ideas checked all my fuzes replaced speed sensor twice checked wiring only thing I can think of is the cluster being bad any ideas