It is probably the thermostat that is stuck and does not allow the passage of the fluid to cool, the normal operating temperature should be 90 C and the motorcycle operating input temperature is 97-98 ° C before the boiling painting of the refrigerant, if your motorcycler is working Its function, probably the noise you hear as if it were revolutionized can be the motorcycle maker that is getting into minimal or standing the car and when the air is running quickly, help you cool a little and do Non ascoltare quel rumore, spero che ti aiuti.
Ahh prima di enciaddas la tua auto assicurati ai livelli di refrigerante.