I hear this noise on many Caravans - friends and while stopped at red lights - when idling it makes a noise sort of like a squeak - sort of like a whistle - like metal against metal - two knives rubbing against each other I heard it described as once. Give it a little gas and the noise goes away. Otherwise engine runs fine. 3.8L.
Been searching the net for similar threads...some say tensioner some say water pump...my water pump was replaced a year ago...noise has been there for several years and I want to get rid of it! When thread I saw said to be careful spraying libricants near the serpentine belt.
Any help will be greatly appreciated. Thanks.