I've got my 04 disco and recently have had issues with the a/c system. Does anyone know why a deep humming/groaning noise that correlates with the throttle happens when I push the ECON button? I figured it was compressor noise however the Econ shuts the compressor off right? I can't figure it out.

On another note, my condenser fan recently burnt out with no warning. The truck only has 90k. Could there be a problem that causes the fan to not turn off?

Any help would be much appreciated.