What does a slipping fan belt sound like?
A loose drive belt will often be noisy, squeaking a bit, or emitting a high-pitched squeal. The most obvious sign of a loose drive belt, though, is in its appearance and tension. A loose belt, simply stated, looks and feels loose. These belt driven components can affect the tension of a belt.
Why does my belt squeal only when I accelerate?
This is a common sign of a loose or worn belt. When this happens as you press the gas pedal and the belt goes from a relatively low speed (at idle or when first starting the car, no speed at all) to a much higher speed as the engine accelerates, this can cause the belts to squeak.
How can you tell if your fan belt is slipping?
A squealing or noisy belt is one of the most common symptoms of a slipping or worn serpentine belt. Squealing can be more pronounced when you’re climbing a hill and running your heater or air conditioning at the same time. Squealing can also occur after you drive over deep puddles or have an undercarriage car wash.
Why does my Toyota Sienna make a lot of noise?
There’s no belt to change, but the trade-off is more reciprocating mass and more noise. Toyota did add some insulation to the firewall and to the door sills to compensate. Just a thought. As long as the noise is normal that’s fine – I’ll take the extra power.
What to do if your engine fan belt is making noise?
Not only could you end up stranded, but it could cause damage to other vital parts of the engine. Look for any discoloration or wetness that may indicate a fluid leak or water on the belt. A little splash of water on the belt isn’t a big deal. However, if it is due to leaking motor oil, coolant, or other engine fluid, the issue is urgent.
Why does my air conditioner belt keep making noise?
In this way, the belt keeps your fan, air conditioning, power steering pump, water pump and alternator working. It also indirectly keeps your battery from dying as that is a role of the alternator.
What causes a serpentine belt to make noise?
The #1 cause of serpentine belt noise is a worn automatic serpentine belt tensioner. Most people blame the belt and replace it only to find the belt noise returns. You may think the belt tensioner is in good shape simply because it applies some tension to the belt—not true!. Automatic belt tensioners have a lifespan of about 100K miles.