Not sure if anyone has any experience or ideas. There's a noise in the cabin. I thought it was the fan motor now I aren't too sure!! So engine off, fan on and all's good. Start the car and there's a feint noise. Drive an hour and idle there is a bit of racket! Turn the ac button and it stops, turn the fan all the way off and it stops. Outside the car I can hear the fans, the passenger side seems louder. At the rear I can't hear much over the top gear exhaust!!! Ac has been gassed, condensers replaced. No leaks and all functioning. Could the passengers fan be off a bit and it resonates back into the cabin?!? It's annoying but hardly critical?!? It doesn't seem to be a consistent noise, definitely worse when the engines warmed up or after a drive