Transmission problems - Throttle Position Sensor? | Ford Explorer Forums

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Transmission problems - Throttle Position Sensor?

Trevor Marchand

New Member
Joined
December 30, 2016
Messages
3
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City, State
Medford, MA
Year, Model & Trim Level
2007 Explorer Sport Trac
Hey everybody,

I own a 2007 Sport Trac Limited and I'm having a transmission issue, and I'm not sure if I have made a small mistake leading to this. I bought the truck for cheap with a bad engine, I replaced it a junkyard 4.0 from a 2005 Explorer (the engine is dated June 04 I think.) I have the throttle body from my truck - the 2007 and I noticed that a 2005 and a 2007 are listed as having two different throttle position sensors. The 2005 is listed as having a Motorcraft DY-968 and the 2007 needs a DY-1164.

My transmission is not shifting well, it will not shift from 1st until it reaches 3000+ RPM. Other gear changes aren't so great and the RPM's stay high until I take my foot of the gas.

I have replaced the solenoid, added transmission fluid and also replaced the servo bore with the units from AJ1E Superior Solutions. I am kinda at a loss and looking for new things to check.
 






After looking, it seems I was low on transmission fluid. :cool2:
 






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