my air conditioner never really blows cold. it seems to be only cool then it will get warm no matter how high i turn it up then cool then hot .i just charged the ac system no change
bad bearing sound at starts at belt sound leaves 1 minute later ac is mildly cool then hot then cool . it really only gets cool when i first turn it on jhust charged didn't help
hate to say it...but it sounds like your compressor is failing and is about ready to give up,I just replaced my `06 Mazda5 compressor for doing the same thing as yours,shop around,$700.00 is about the best price I found,Mazda wanted $1100.00,hope this helps,but it is great to have the a/c back in triple digit heat!!!