Alright folks...instead of making a new post and kicking a new dead horse, I figured I'd bring an old thread back to life, and kick this one instead.
So since earlier this year (read from the beginning of this post...), I rebuilt my OD Ever since, its worked WORSE than it did before I rebuilt the thing. Yesterday, 10/15/17, I yanked out all the hydraulic components that I could. The high pressure filter, the check valve thing (spring, ball, and plate) under the pump in the center chamber, and the relief valve beside the solenoid. I inspected and cleaned everything that I could. I blew air through all the passage ways that I could find in the OD where the parts mentioned above reside. My uncle came across a questionable o-ring on the smaller diameter cylinder (Part number 21, above part number 24). I replaced that. The seal between that particular o-ring and the larger sleeve it sits in is MUCH better. The relief valve currently has 3 shims, all of which equal to .024". After I was all happy, thinking that we found the issue as to why the O.D. wasn't working for flippin' months, I put everything back together, refilled the transmission, and took it out for a spin. What did I find? That the fudging thing STILL DIDN'T WORK. It wouldn't even try. But the kicker is, is that when I let off the gas pedal, basically letting the car coast, the RPM would drop while the OD was engaged, settling to around 1500 RPM. But when you pressed the gas, it would jump right back up. 3000 RPM at 60 MPH.
Today, I took it back out after I got home from work, just for fun. Probably not even a mile from my house, I got curious, and pressed the OD button and BAM. It engaged! I was stoked. I immediately took to the closest highway and opened it up (dis-engaging and re-engaging the OD along the way). Again, it did perfect at this point. I drove to the next closest town. When I got to where I wanted to turn around at, I dis-engaged, hung a u-turn, and engaged the OD again. Only this time...nothing happened. Total distance from my house to the next closest town is 8.4 miles one way....so its not too long via car.
I got home and hooked up my pressure gauge to test the residual, and the operating pressure. It didn't hit 20 PSI (residual) until around 55 MPH. Operating (OD engaged) was around 300 to 325 PSI. So, with all that said....does ANYONE have any ideas as to what may be wrong? Thanks for reading the story by the way...ANY help is appreciated.
Also, the only thing I have replaced between now and the time of rebuild is the oring mentioned above.