Try taking out in 2nd gear next time it slips. That is a mechanical selection and should work provided there are no mechanical or hydraulic issues.
Still need those codes to get a direction...
BTW, which sensor are you working on, the TSS?
Steve
98 Contour SE Sport 2.5 Duratec ATX The wifey's car
89 Taurus SHO - 246K miles
94 SHO ATX - 190K
1997 F-150 5.4L ATX - The Workhorse 150K.
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