Erratic transmission shifting

1999 LINCOLN NAVIGATOR
200,000 MILES • 4WD • AUTOMATIC
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MAPKA
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  • 1 POST
My trans will shift normal on take off but once driven for a little bit it shifts erratically like it doesn't knw wat gear it's supposed to be in anymore it will slam me back into my seat the trans has been rebuilt an checked an I also replace the speed/ nutral safety censor on the side of trans but that wasn't it ??? Any guess's
Jan 13, 2016 at 8:56 PM
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HMAC300
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  • 48,601 POSTS
scan for codes first, trans should be under warranty if rebuilt recently anyhow'
Jan 14, 2016 at 6:32 AM