yohon

Does anyone know of a more unlikely cause for a p0720 code to pop? I've changed out the output shaft speed sensor (factory one had a pretty obvious failure) but now I'm wondering if something else in the transmission can be causing it.

Thank you for that! I've only recently been reading up on @dynamics work. Wish I had found it before I put this shift kit in. But those numbers give me something to aim for. Where your transmission is making pressure is much diffrent then mine. My highest pressure is at WOT 4th gear 150. WOT 1st gear is about 120.

First atf change on my rebuild transmission and I figured I'd throw in a transgo shift kit in it while I was in it. I really wish I took readings of pressures before I tore into it. Now I'm looking at 90 psi at 1200 rpm dead stop and 120 psi with the tv valve all the way foward at 1200 rpm. I've done a bunch of reading on this site and read some great guides. But I cant find someone with the same problem I'm having. According to transgo I should be seeing closer to 120 -155. Only other mods to the transmission was a single disc billet torque converter and a upgraded 2nd gear strut and anchor. Am I ok to run at these pressures? Is my pump going out? Or do I need to upgrade the accumulator piston and governor solenoid? (Seing 150 psi at WOT in od ) thank yall in advance. FYI amazon sells a 47re transmission pan with a drain plug for 27$ if your like me and too broke for the fancy billet aluminum ones.