hi guys. so my au is really starting to piss me rightttt off because it seems to just cut out and turn off when it reaches as certain temperature. i think this is why anyway because it only seems to cut out when the temperature needle reaches the "n" in normal gauge. i can also feel a decrease in performance. i have taken it to mechanics twice and so far they have have change fuel filter, coil pack, crank and cam sensors. anyone know what it could be?