my 1995 mustang had its transmission rebuilt and a shift kit installed last year ( automatic), last night i was driving home and it started to slip in overdrive it got to the point where i couldn't even drive it,I pulled over and checked the fluid level, its fine, I drove it the rest of the way home with my od.button on so it wouldn't go into overdrive and I had no problems with slipping, was wondering if any one had any info, so I could go back to the shop and no exactly what was going on.. thanks a lot
danman
danman

The solenoids are only there for the 1-2 and 3-4 shifts, and have nothing to do with OD.