1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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17,276 Posts
I would take a close look at the 41TE transaxle output speed sensor and connector. A poor connection or the sensor itself may be 'tickling' the speed signal output wire with a voltage and creating a false speed signal.
The signal goes to the TCM where it is then bussed out to the other modules including the instrument cluster.
The signal goes to the TCM where it is then bussed out to the other modules including the instrument cluster.