What is the solution to engine belt noise?
2 Answers
It may be due to the belt slipping on the generator, causing intense friction and vibration between the belt and the pulley, resulting in a noise at a certain frequency. The main reasons for belt slipping are belt looseness or aging. Factors that can lead to belt looseness include improper adjustment of the belt tensioner or insufficient tensioner spring force. In this case, the tension of the belt tensioner should be adjusted first. If this does not work, the tensioner should be replaced. Belt aging mainly refers to the belt gradually hardening and losing elasticity during prolonged use, reducing the friction between the belt and the pulley. In this case, the belt can only be replaced. Below are the solutions for engine belt noise: 1. Most belt noise is caused by looseness. You can try pressing the belt with your finger. If you feel obvious looseness, adjust the tension. 2. If the engine belt makes noise, you can pour water on it. If the noise disappears, it indicates a problem with the belt quality, and the belt should be replaced at a repair shop. 3. If the engine belt makes noise, it may be caused by improper installation of auxiliary components. In this case, you should seek professional inspection and repair.
I also encountered a squeaking engine belt while driving before, which was really a headache. The reasons could be belt aging, looseness, or oil contamination. Here's a DIY solution: Open the engine hood and press the center of the belt with your hand. If it sinks more than 1 cm, it indicates insufficient tension and requires adjusting the tensioner. If the belt surface shows cracks or is overly smooth, it's time for replacement. I recommend buying a new belt—usually costs just a few dozen bucks. If you're not comfortable doing it yourself, take it to a repair shop immediately for professional service. Delaying could lead to belt breakage, which is worse—the engine might stall, and towing fees could exceed repair costs. Make it a habit to inspect the belt every six months and keep the engine compartment clean to avoid debris. Addressing small issues promptly saves money and hassle—don't procrastinate like I did and end up with bigger troubles.
