hi mate i made a thread up on this i had the exact same problem after parking mine up for 2 months. it only happens wen reved past 1500 rpm . if yours is the same as mine and hasnt got air con then iots the idle pulley bolted to the bottom of the pulley.
no it wouldnt squeak all the tim as the belt isnt under as much pressure at idle. mine used to whine at 1500+ but perfect at idle. i guarantee you its one of the idle pulleys. best way to check is take off the fan belt and start the car and rev it. if the noise stops then its on of the pulleys run by fan belt. fan belt is easy to get to and to remove anyway
no it wouldnt squeak all the tim as the belt isnt under as much pressure at idle. mine used to whine at 1500+ but perfect at idle. i guarantee you its one of the idle pulleys. best way to check is take off the fan belt and start the car and rev it. if the noise stops then its on of the pulleys run by fan belt. fan belt is easy to get to and to remove anyway