Ac is blowing very warm have replaced the AC pressure Valve,fan not workin right on 2008 Chrysler Aspen

It blows hard but not very cool. Fan is not stayin on, however it does comr on just not the way it should. Could my orface tube be clogged or am I just low on freon. I am at a loss on what this could be

Have the pressures checked with gauges , may simply be low on refrigerant , like you said.