Question: Can A Bad Alternator Belt Drain Your Battery?

How long can a car run without an alternator belt?

Eight miles may be OK, but your battery only has at most 35-45 AH (amp hours) of reserve capacity when fully charged.

It’s using about 15-20 amps when running; while in theory you could drive for about two hours, if the battery is weak or not fully charged it could be a lot less..

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.

What happens when timing belt breaks while driving?

What happens if the timing belt breaks? If a timing belt breaks, the engine will no longer work. If a timing belt breaks while driving in an interference engine, the camshaft stops turning leaving some of the engine valves in the open position. … This will cause the pistons to strike the valves that left open.

Is it easy to replace alternator belt?

Replacing an alternator belt is fairly easy; all you need to get started are the right tools. As always, when starting on a project, it is always a good idea to practice precaution. Make sure that the key is out of the ignition and that the negative battery cable is disconnected before you start.

Is timing belt same as alternator belt?

Timing belts synchronize the movement of the crankshaft and the camshaft as a main components for the engine, while the drive belt drives the engines accesories such as air conditioner, power steering pump, water pump, alternator, etc. A drive belt is cheap while a timing belt is expensive.

Can loose alternator belt drain battery?

When the alternator can no longer fully charge the battery because of a loose alternator belt, the battery will then try to provide all the power to the vehicle on its own. Unfortunately, the battery will die within minutes because it doesn’t have enough power to sustain all the vehicle’s energy needs by itself.

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.

Will a bad serpentine belt cause alternator problems?

One of the most overlooked maintenance items on vehicles are serpentine belts. … Once the belt is worn, it will have less surface area contact with the pulley and begin to fail or make noise. Also, a worn belt will not properly seat into an alternator drive pulley, so it may not carry the full output of an alternator.

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.

What happens if you over tighten alternator belt?

If the belts are too tight, they can put a strain on the shaft (and its bearing) of the alternator, power-steering pump and even the water pump. Most belts are installed on the tight side because they take an initial stretch. … It looks like the power-steering fluid level is getting low.

When should I replace alternator belt?

Under ideal circumstances, your car’s serpentine belt should last 60,000–100,000 miles. It’s important to replace this belt as part of your vehicle’s scheduled maintenance (even if it looks okay) to avoid it breaking while you’re on the road. Not sure when your serpentine belt was last replaced?

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 belt is connected to the alternator?

serpentine beltThe serpentine belt – is used to drive several components attached to the engine. It drives the alternator that powers the electrical system and recharges the battery. It also drives the power steering pump, the air conditioning compressor, and the water pump.

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 fit an alternator belt?

Typically, an alternator belt replacement cost in the UK will be around £100–£200 from a registered dealer. Other garages will charge less for a new alternator belt with prices often at around half the dealer rate.