My a/c only blows when the car is moving. It blows nice and cold, but once I stop, so does the air. Once I start moving and get a little speed the air starts blowing again. I am at a loss with what to try next. I have a new blower motor, relay and relay connection, new vacuum switch, new blower control switch. For a short time after changing the blower motor, it would blow when I would stop. But then sometimes not blow at all. Now it just blows when the car is moving and sometimes it doesnt blow very strong. Any suggestions? I live in AZ and it is still blazing hot here.