I have a 1990 F250 with a 7.5 liter and an E4OD.
It starting acting up a couple months ago. Tranny would seemingly go into neutral while on freeway. I figured trans was going out... after reading several threads ive decided to try changing the mlps first, got a new one at the dealer $103!!!. It is the updated one with the connector on the top. I'm currently waiting on a new pigtail from autozone(the original is in bad shape, wires frayed, insulation missing. Also I think when it started having issues we were having some serious rains, which may have caused this connect to get wet.

I believe a previous owner may have had the trans rebuilt at some point. The connect has 6 wires going in it and when I trace those wires back, two are spliced into one farther up the harness a bit. Looks like one is tied into a wire that goes to the solenoid harness. I'm hoping I can cut and splice the 6 wires into the new pigtail and be good.

Ok, sorry for long intro, may need further help with mlps harness connector later.

For now, while I was under there I decided to pull the solenoid plug as instructed to make access to mlps plug easier... what a pita... the lock is on the backside almost impossible to get to, I messed the plug up all the way around, but not fubarred. When I pulled the plug out, it was soaked in transmission fluid...
Is that normal?