Focus 2.0 petrol 53 plate - 44000 miles. At idle and up to about 2000 rpm heard rattling noise from cam belt cover and tested with stethescope - sounds like belt/tensioner. Just had replaced but noise still there although not quite as bad. Garage suggests might be power steering pump resonating through engine. Water pump checked and is ok. Is there anything else it could be.
Sorry as with all noises it is impossible to diagnose through e-mail