I went out today to try the A/C and it worked. I started the car, used the same settings as the day before when the A/C wouldn't work, and the A/C worked. The auxilary fans kicked in after a few minutes of running. What should I be looking for as the problem? The air is cold when blowing so it shouldn't need a charge correct? Could it be the low pressure switch as mentioned before and where is it located? Thanks.