signs of bad idler pulley

Picture this: it’s 6 a.m., the coffee’s still sloshing around in your travel mug, and the only thing between you and the morning commute is a squeal that sounds like a banshee

So, What Does an Idler Pulley Do, Exactly? Pop the hood and follow the snake-like belt that winds around the crank, alternator, A/C and power-steering pulleys. Notice that smooth, free-spinning wheel that