How to tell if differential is bad - Signs to watch for
If your car has started making a weird humming sound that gets louder as you speed up, you're likely wondering how to tell if differential is bad. It's one of those parts that most people don't think about until it starts acting up, but once it does, it's hard to ignore. The differential is basically the unsung hero of your drivetrain, allowing your wheels to turn at different speeds when you're going around a corner. Without it, your tires would skip and hop all over the road every time you tried to pull into a parking spot. ...