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cbigham's avatar
cbigham
Explorer III
Dec 30, 2013

vehicle speed sensor- cat C7-allison trans combo

Got a funmover 39c on an f750 cat c7 chassis with a speedometer going wacko....one second at 0, then 90, bouncing around. Would be easier to service if the engine wasn't cutting out thinking its over ...
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cbigham's avatar
cbigham
Explorer III
Dec 31, 2013
Hadn't hit limp mode yet, but it does shut down injection momentarily. Shifting is fine. I will look for that plug tomorrow. I understand from seeing documents there are two engine sensors, one crank, one can, but the trans is the one to feed info to the ecu and dash. Can't drive it to the dealer like this yet..

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