So this is what happens about once a month for a week...i'll start it up drive a lil bit and it stalls out when i come to a stop...if i beep the horn while driving it downshifts and just stays at around 3 or 4 grand depending on how fast i'm driving then the rest of that day it usually won't shift...or if you want it to you have to floor it and finally at 5 it shifts....what's up with the horn thing? not very familiar with motors and computers and what not...more of a suspension guy...i'm working on expanding my horizons...this is my first project so what is it? do i need to replace my ecu? no one can figure it out!!!