Durring the summer when I would turn on my car the AC was blowing hot air, sometimes if I just turned my car off and turned it back on the AC would blow cold again.

Now the Ac will just not blow cold at all.

-Both of the radiator fans are working.
-Fan works.
-Heater works.
-I can adjust where the air comes out.
-messing with the Ac controlls does not help.

This is for an 03 350z Touring

 

It sounds like either a relay that controls the compressor clutch or the clutch itself has failed.

With the hood up and the engine idling, have someone switch the AC on while you listen near the front of the engine. You should hear a definite snap and a slight change in engine RPM when the electric clutch engages.

A fuse or loss of Freon wouldn't be intermittent like you described. Clutches almost never go bad, so I'm betting on a relay in or near the BCM.

 

you might have a leak in one of your hose lines. try using some stop leak fluid. Man it's so cold up here. the last thing i'm thinking about is AC.

 

If the compressor is cycling on n off u prolly need a charge... If you have a leak easiest way to detect it is look for oil around any of the fittings. Usually its a black dust as its been leaking for a while n attracted grime from the road...

 

haha well its still 75-80 degrees here in tucson!

 

i have an 03 also and my ac isnt working either. my belt is gone tho. its a cheap fix. look down and see if your belt is there... i have no need for ac most of the time. i usually roll with windows down plus its less strain on the motor which means more ponies

 

"Durring the summer when I would turn on my car the AC was blowing hot air, sometimes if I just turned my car off and turned it back on the AC would blow cold again."

The OP stated the problem would come and go when it first started. That rules out a missing belt or loss of Freon as the cause of the original symptoms.