How Often Should You Replace Your Alternator Belt?

What causes alternator belt to break?

The most serious failure is when the serpentine belt breaks completely.

This is usually the result of a belt in poor condition, or a problem with one of the accessory components being driven by the belt.

A failed bearing in a pulley being driven by the serpentine belt will also cause the belt to break..

Will a car start without an alternator belt?

Without the alternator belt, you’re running strictly on battery power. Also, anything else belt driven won’t work. You can still drive it of course.

What does an alternator belt do?

The most common accessories driven by the serpentine belt are going to be the alternator the power steering pump and the AC compressor. Some engines may also drive other accessories like the water pump. On most vehicles, a pulley on the end of the crankshaft is what turns the belt and drives the accessories.

How much does it cost to replace an alternator belt?

The replacement cost of an alternator belt is typically between $100 and $200. The part cost is between $25 and $80 while the labor cost is between $75 and $120. The true replacement cost will depend on how long it takes the mechanic to access your alternator belt.

What does a bad alternator belt sound like?

If you hear squealing noises coming with your car, then it could be the engine or serpentine belt. In most cases in your vehicle, it will be that your serpentine belt is the culprit. These serpentine belt noises might get even louder and worse over time, or as you step on the gas pedal to accelerate.

What happens if alternator belt breaks while driving?

This can lead to a sudden lost of power assist for the steering system, leading to the steering wheel all-of-a-sudden becoming very hard to turn. A broken serpentine belt may stop the water pump from circulating coolant through the cooling system, causing the engine can overheat.

What happens when the alternator goes out?

The alternator provides power to the spark plugs that ignite the gasoline in your engine. When the alternator is failing, there might not be enough power in the spark plugs to keep the engine alive, which can cause it to stall for no reason while running, or to have trouble starting.

Is the alternator belt the same as the serpentine belt?

Sometimes called a fan belt, alternator belt, or accessory drive belt, the serpentine belt is spun by the engine crankshaft and, in turn, spins, or “drives”, the accessories.

How do I know if my alternator belt is bad?

Symptoms of a Bad or Failing Alternator BeltBattery light is on. When the battery light on your instrument cluster comes on, you will need to pay attention. … Dimming or flickering interior lights. The lights on the inside of your car are used primarily during the nighttime hours. … Engine stalls.

Can you drive with a bad alternator belt?

If it does not spin fast enough, alternator output will diminish and could lead to dim headlights, loss of some electronic functions, loss of vehicle power, and even a dead battery. … But if the serpentine belt in your vehicle does break during driving, the results can be terrifying – and potentially dangerous.