Well I have another and hopefully the last problem, my A/C will blow cold air at idle but as soon as I give it gas the box changes directions and hot air comes out. I replaced the vaccum switch behind control head in dash but did not cure problem also the vaccum resevoir was missing so I put a new one on it and it still didnt cure anything. I did charge the system and it does blow cold at idle. It seems like the box is not closing all the way because I feel hot air just driving down the road. ANY IDEAS ANYONE.