Well after much tuneing and slowly adding more and more HP I have finally run into a transmission problem... I new it was coming, actually held up way longer than i thought she would. But i Threw a P0700, which i know just turns on the check engine light. And The other code i threw was a P0777 (lucky 7's) which was a bit unexpected to me and my brother. I think it has something to with a pressure control solenoid B stuck open. Anywho, I was really opening her up at about 110kmh and when she went to shift between 5-6 gears at around 140kmh is when it went into limp mode, 4th gear and i just pulled over and shut her down and then restarted and all was well other than the codes it threw. But i thought if you slipped your transmission you would throw a code saying your 5-6 or whatever gear ratio was out, or somthing along those lines. I was just wondering if any of you guys remember the codes you had when you limped your transmission or if you guys have seen this happen before?

I have a stock transmission, no lift pumps, and tuned with EFI...obviously, Putting quite a bit of power down so its no surprize to me that the transmission is running into problems, i just wanted to know if anyone has seen this one before. thanks

I guess i can answer my own question, the search function really does work, i found this post by mike L on here.


Mike L's Post
"P0777 usualy means you had an on coming clutch come on too fast before the off going clutch totaly released. It can also mean that the clutches did not have enough holding power ( pressure ) to handle the delivered tq. A dirty spin on filter can cause this because of restricted control main pressure. A sticky valve can cause this also but usualy it's too much tq for the stock Alli."

So my guess is maybe to much torque for the stock allison but still never slipped a clutch???