It all started last a few weeks ago. I noticed a long shift in to third when WOT. Then, later in the week it shifts hard and the pump is howling when im going slow. I scanned and found DTC P1811. I pull out the manual and it says to do a line pressure check. I make it to the point where im suppose to adjust my force motor current. Im using HP Tuners and it wont let me. I can see the box, but i can not change it and it is grayed out (as in not an option). Do i have to use a tech 2? Or, can i take it for a drive and use those readings? Cuz, that is what i did. I took it for a drive and saw spikes of 200psi, but those relate to times when force motor current went down. How exact in time the correlation is, I can not say. i was driving, holding a guage, and looking at a laptop.
Any help with the force motor current settings in HPT would be awesome. Or, if a drive test will do, let me know.
P.S. this is a zzp tranny with about 27k on it, and the fluid is beautiful.
