What are the symptoms of bad idler pulleys and a faulty drive belt tensioner?

If you're wondering about the symptoms of bad idler pulleys and a faulty drive belt tensioner, here are a few potential signs to look out for: Squeaking or Squealing Noises - Idler pulleys or a drive belt tensioner that are failing may produce a high-pitched squeaking or squealing noise. Belt Wear or Damage - Worn or damaged belts can indicate that the idler pulleys or tensioner are not properly functioning. Vibrations - Vibrations or shaking may occur if the idler pulleys or tensioner are failing. Overheating - A failing tensioner can cause the drive belt to slip, leading to overheating issues. Reduced Performance - If the drive belt is slipping or the pulleys are not functioning correctly, it can lead to reduced performance. Dashboard Warning Lights - Some vehicles have dashboard warning lights that can indicate an issue with the idler pulleys or tensioner. To properly diagnose the issue, a professional mechanic can inspect the idler pulleys, tensioner, and drive belt to determine the root cause of the problem. Solutions may include replacing the idler pulleys, tensioner, or drive belt, as well as addressing any other issues that may have contributed to the problem. It's important to address any issues with the idler pulleys or drive belt tensioner promptly to prevent further damage to the engine and ensure proper vehicle performance.