Eric, thanks for your respons. Anyhow, there is another twist to this saga. I took her back to Ford for change of brakes and asked them to check if there was a leak- because they had injected some dye a few days ago. on last visit, they had verified the ac system, added refrigerant and put in some dye.

I complained today that the noise with AC is still there.
Have been told that although there is no leak, there are other problems with AC. Will be covered by warantee but will have to pay $100 deductible.
Have been told that there is problem with clutch, pulley etc.

AM REALLY PUZZLED, HOW COULD IT BE? SHOULD I ASK THEM TO CHECK THE HEATER BLOWER MOTOR, AS THIS SEEMS TO BE A COMMON PROBLEM WITH OUR CARS.

Your help, advice and input is appreciated. Many thanks