Transmission problem
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Joined: Apr 2009
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Transmission problem
1998 Ford Explorer with automatic transmission. While driving at a steady speed the transmission will down shift, up shift and shift erratic, it seems to do this at all speeds. Very noticeable driving at 45-50 mph, the transmission will shift back and forth between 3rd and 4th gears while driving at a steady speed. The transmission is not slipping. After a couple of days of driving with this problem the check engine light went on, code P0705 (Transmission Range Sensor Circuit malfunction (PRNDL Input)). I replaced the Transmission Range Sensor/Neutral safety switch, still have the same problems. Anyone have any ideas. Thanks
Transmission Rebuilder
Joined: Jul 2008
Posts: 1,570
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From: North Georgia
Check the Light Blue/Yellow wire at the range sensor it should have 5 volts. If there is no voltage there check the square 16-terminal connector at the back of the engine, above the transmission bell housing, check for the 5 volts on both sides of that connector on the Light Blue/Yellow wire. I have had a bad connection there once before that caused the same problem you are having.
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hdel
Explorer, Sport Trac, Mountaineer & Aviator
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Jan 6, 2015 09:39 AM
