1997 Ford Explorer AWD A/C

First there is no air in the lines. The air conditioner works with freon and the system is under pressure and you should respect it by all means. There are certain tools needed to do the job correctly. The system is a closed system and if there is a leak then the freon leaks out therefore the system does not produce cool air. There are more parts to the system than one might think. Of course you have the dash controls. You also have a compressor, receiver/dryer, evaporator, service valves (a high side and a low side). To me it sounds like there is a leak in the system there is always the possibility that one of the components , but you should get it checked by a local shop. There is a fluorescent dye they can put in the system and and check for leaks by using a black light and a pair of special goggles. Where ever there is a leak it will glow yellow-green. There are other types of methods you would have to ask your local shop. I hope this information has helped you.

You need to check the lines of the air conditioner because is broke and the air is escaping. Mabey the car was crached or the lines are old and need maintenace. You need to take it to a professional to check the air in the lines.