I finally got my built head on. The car ran for a little while, then died. Got codes 14 IACV and 15 which is Ignition output signal. It wouldnt crank up at all after it died last night. But today, when i tried, it cranked on first try. Also, my lower radiator hose stays completely cold, any ideas on this? thanks. my temp gauge was reading all the way hot yesterday, but i dont know if its accurate. It sits a little below half way with the car completely off, so im pretty sure the sender is broken. any help is appreciated