Hey everyone, I am Having a few problems with my mum's falcon..

recently the fan heater and aircon stopped working
i have checked the fan fuse in the bonnet and the fuse underneath the steering column i have cleaned them and still no luck.

whats happening is you start the car and the fans spin for no more than 5 minutes without air blowing into the car at all. i have tried all switches and dials. this falcon has the basic air con 1 2 3 boost
not auto climate control.

after the fan stops spinning thats it! nothing else goes down until you shut off the car and turn it on again. but it does the same thing the fan spins then shuts off.

no air at all blows into the cabin i have tried all 4 settings the heater de mister air com aircon max.
now i have no idea what has gone wrong? would anyone have an idea? i have read plenty of fourms and they say "gas leak or out of gas" how do i find this out?

any help would be very much appreciated!!

Thanks. Aidan.