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E4OD overdrive problems

   
Old Oct 17, 2017 | 04:28 PM
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E4OD overdrive problems
1990 f150 351W...Any transmission guys out there familiar with the E4OD transmission, is the speedometer gear in the transfer case a key piece for transmission function? What does the speedometer control?
 
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Old Oct 17, 2017 | 09:46 PM
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Yes, it is a key piece. The transmission shifts mostly on vehicle speed from that sensor. Without vehicle speed the shifts will be very erratic.
 
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