hi my name is mark from the uk, iam new to the forum and just purchased a 95 cherokee all was going well untill i got a squelling noise from what seems to be the A-C pulley this gets worse as it gets hotter, and increases with engine speed, but if is spray lubricant on the belt it stops for a day or so, do i need to replace the belt. any help or advice would be grately appreciated. many thanks