My ac compressor is not cutting on and idk what can cause this, please help me. When i put it on max ac air blows but its not cold then i popped the hood and noticed that the ac clutch was not engaging. Last week however the compressor did come on and its blowing cold when it does come on so i know that its not just needing charging, Maybe something electrical??? Thanx in advanced for help

 

Has anyone had this happen to their car, i really dont know where to start.