Can someone tell me what a bad idler pulley sounds like? There is a strange whining noise I can hear at idle. It sounds like an accesory pulley.
Thanks
When the one in my Ford Ranger went out, it sounded like grinding. Like the cooling fan was metal and was missing a blade and it was hitting something. With the engine running, my mechanic friend pushed on the idler pulleys one at a time with a screwdriver blade until he found the one that was bad. The noise when away when he was pushing on the right one. Just a little pressure on the side of the pulley was enough to change its alignment.