When should a serpentine belt be replaced?

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.

How do you know your serpentine belt is going bad?

Bad Serpentine Belts Cause Vehicle Performance Issues

1. Flickering lights on start up.
2. Failure to start.
3. Dimmed headlights.
4. Continuously illuminated amperage light.

How long do serpentine belts normally last?

On average, serpentine belts should last between 60,000 and 100,000 miles. However, if you're only putting a few thousand miles annually on your vehicle, don't use that mileage interval as the sole guide for when to replace the serpentine belt.

How much does it cost to replace a serpentine belt?

A typical serpentine belt start at around $25 and goes up to $75 at most. If you know some car repair basics, you could change the belt yourself, and it may save you paying labor charges somewhere between $75 and $120. All together, you're looking at around $100 to $195 to replace your serpentine belt.

What does a worn serpentine belt sound like?

Symptoms of a broken serpentine belt include loud slapping, squealing or knocking noises coming from under the hood. The battery-shaped charging system warning light might also come on because the alternator will stop charging the battery. If a car has a hydraulic power steering pump, the steering will become stiff.

Will a new serpentine belt improve performance?

No. If anything, more friction from your belt will reduce the power you put to the wheels.

Can a serpentine belt last 200000 miles?

With that being said most serpentine/drive belts can last for a very long time before they need to be replaced. The lifespan of the belt will depend mostly on the type of material it's made of. Older style belts generally last about 50,000 miles, while those made from EPDM can last up to 100,000 miles.

Should I replace tensioner with serpentine belt?

You should expect to replace your belt tensioner in the 40,000-70,000 mile range. It is also customary to swap more than one part simultaneously, usually a worn-out pulley from other systems and even the serpentine belt itself.

Is a serpentine belt the same as a timing belt?

The serpentine belt is located on the outside of the engine

It's a long rubber band stretched out on the side of the car, connecting the engine to key components of your car. For instance, the timing belt spins the alternator, which converts engine power to electricity.

What problems can a bad serpentine belt cause?

If you have a bad serpentine belt, then it will be harder to move the steering wheel to steer your vehicle. This issue could also be caused by low power steering fluid. While you're under the hood, check to make sure the power steering reservoir has the recommended level of fluid.

How can you tell if your drive belt needs to be replaced?

Common Signs of Drive Belt Replacement

1. Strange Noises. One of the biggest signs that you probably need to take your vehicle to the dealership for a check is when you start hearing strange noises coming from your engine. ...
2. Visual Signs of Wear. ...
3. Mileage Indicators. ...
4. Breakage is Bad.

What happens when the serpentine 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.

Should timing belt be replaced with water pump?

Generally, the idler pulleys, tensioner and water pump should always be replaced when the timing belt is replaced. In most cases, the timing belt drives the water pump, so it is the right time to replace the water pump. It is also recommended by the manufacturer.

Should I replace tensioner or just pulley?

If the pulley is damaged, replace the tensioner assembly not just the pulley. If an idler pulley is damaged, inspect the tensioner also because vibrations caused by a bad idler pulley may damage the tensioner.

How do I know if I need a new tensioner?

Grinding or squeaking noise from the belts or tensioner

The most common symptom of a bad or failing drive belt tensioner is noise from the belts or tensioner. If the tensioner is loose the belts may squeak or squeal, especially when the engine is first started.

Should I replace idler pulley and tensioner?

Alternatively, idlers spin with the overarching aim of moving belts to specific positions. However, if bearings fail, tensioner and idler pulleys both require replacement. If there is any odd noise such as a grinding or squealing sound or if either piece wobbles, it is a sign that replacement will be necessary.

Can a timing belt last 15 years?

This is where all of the discrepancy of maintenance and replacement occurs. Depending on what schedule you may read, including information distributed by the manufacturers themselves, the average life span of a timing belt is between 60,000 and 105,000 miles or after 7 to 10 years regardless of mileage.

How much does it cost to replace a drive belt?

But what does a serpentine belt replacement cost? Of course, it depends on your make and model as well as labor costs, but in general a replacement serpentine belt costs around $70-$200 (plus taxes and fees), including around $50 for the belt and around $150 for the labor.

How much does it cost to change timing belt?

Depending on your vehicle, a timing belt service could turn into a big deal and it's going to be costly. Having a timing belt replaced before it breaks will cost between $500 and $1,000 on average while waiting for it to break before replacing can cost upward of $2,000 or more.

Why is replacing a timing belt so expensive?

The timing belt itself isn't an expensive part. The time and labor are what make it so expensive. To get to the timing belt, the engine needs to be disassembled. Doing so takes significant time and effort.

How long can you drive without a serpentine belt?

There are a couple of factors influencing the answer to this question, but on average, your car should be able to run between 20-90 minutes with a broken serpentine belt. The engine will overheat faster without a functioning cooling system on a hot day, so your driving window is less.

What causes serpentine belt to keep breaking?

Serpentine belt problems usually result from one of three causes: a defective belt tensioner; misalignment of a pulley; or, defective bearings in the tensioner, idler, or one of accessories driven by the belt (including the water pump).

What happens if you don't replace drive belt?

What happens to a car if a drive belt breaks? If a drive belt breaks, you won't be able to drive your car. This is because the engine will overheat if the water pump is not running. If your car has a hydraulic power steering, you will also lose the steering assist, as the power steering pump will be disabled.

Can you replace a serpentine belt yourself?

Automatic belt tensioners, standard in most cars now, make changing a serpentine belt a simple DIY repair. Follow the clear photos and step-by-step instructions and you'll be done in 15 minutes.