So my A/C stopped working after a year of not using the truck as a daily (I only drove it randomly). I got married, bought a house, etc. so needless to say, dailying the truck became financially appealing... but I've driven 7 months without A/C. Initially, I had a slight leak in one of the valves on the lines, so I had the system evacuated and I replaced the valve. I had the system refilled by my friend who is a residential A/C tech and we noticed the compressor try to come on and then shut off. He suggested it might be the pressure switch in the evaporator. I tried jumping that, no dice, compressor wouldn't start. So, I ran a wire from the compressor to the battery and got it to start, but the A/C will not blow cold. I know my lines are charged and they held vacuum for over an hour before being charged, thus I know there are no leaks. Could I have a stuck expansion valve? What else should I consider? This is on a 96 Tacoma Xcab, rwd.