The transmission in Flyboys 93Z is causing me problems. I put a line pressure guage on it and it has 250-275psi all the time, as soon as the engine starts it shoots up.

I talked to transgo and dana at probuilt and the things they told me to check were, the TV system, I took it out elemintated that, checked the boost valve and pressure regulator vavle, then took the tranny out and checked the slide in the front pump. Everyone said the slide sticking will cause the high pressure all the time. I checked the slide, its free, flat sanded it some just to make sure, put it back together, and the thing still has 250psi. I can't call transgo untill monday and dana is out of ideas. Anyone run into this problem before? thanks.

Jason