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What does the serpentine belt do?

By Owen Barnes
Well, it won't keep your pants up, but it does transport power to your vital automotive components. The serpentine belt is one long, snaking, winding belt that keeps your alternator, power steering pump, air conditioning and—in some cases—your water pump running smoothly and effectively.

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Subsequently, one may also ask, what happens to a car when the serpentine belt breaks?

A broken serpentine belt leads to a sudden loss of power assist for the steering system, where the steering wheel all-of-a-sudden becomes very hard to turn. A broken serpentine belt stops the water pump from circulating coolant (antifreeze) through the cooling system, and the engine can overheat - anywhere!

can you drive with a broken serpentine belt? Some cars have the water pump driven off the timing belt and some cars have more than one serpentine belt, so which accessories would work and which wouldn't would vary depending upon your car and which serpentine belt was broken.. It is best to not drive a car with a broken belt, even for a short distance.

Secondly, what are the symptoms of a bad serpentine belt?

If you suspect your serpentine belt is failing, watch out for the following symptoms:

  • Squealing noise from the front of the vehicle. If you notice a squealing noise coming from the front of your vehicle, it could be from the serpentine belt.
  • Power steering and AC not working.
  • Engine overheating.
  • Cracks and wear on the belt.

How long does it take to replace a serpentine belt?

All these can take you one and a half an hour or more. For an experienced person, it will only take about 20-minutes, as the only concern will be to understand out how to loosen the tensioner bolt, and if the belt is the right one.

Related Question Answers

Is a serpentine belt the same as a timing belt?

A serpentine belt does more work than a timing belt. Timing belts synchronize the movement of the crankshaft and the camshaft while the serpentine belt transmits mechanical power which drives the air conditioner, water pump, alternator, etc. A timing belt needs more work to be replaced because it is covered.

Does Jiffy Lube change serpentine belts?

Inspecting your vehicle's belts and hoses and having them replaced before they fail can prevent inconvenient breakdowns and costly repairs. To help, Jiffy Lube offers engine services with serpentine belt replacement that includes the following: A visual inspection of the serpentine belt.

How expensive is it to replace a serpentine belt?

Serpentine Belt Replacement Cost It is very inexpensive to replace a serpentine belt. The replacement cost is only going to be between $90 and $200 in most cases. The belt itself will cost between $25 and $75 while the labor costs will probably be between $75 and $120.

How long can you drive with a bad serpentine belt?

Serpentine belts are built to last—much longer than before because of advancements in rubber technology. Under ideal conditions, a belt should stick with you for an average of 60,000 to 100,000 miles.

How hard is it to change a serpentine belt?

Serpentine belt replacement is easy because today's automatic drive belt tensioners eliminate the need to loosen bolts or pry components into position for retensioning. Just rotate the tensioner, remove the old belt and install a new one.

What would cause a serpentine belt to break?

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). Excessive cracking: Other than severe old age, defective tensioner.

What causes a serpentine belt to shred?

In most cases, it's caused by the tensioner pulley being slightly misaligned. When you replace the serpentine belt, it's important to align the pulley with the right tools; such as a serpentine belt removal tool and pulley alignment wrench.

Will a car start without a serpentine belt?

Without a serpentine belt connected to drive these accessories your car will barely be able to function. You won't have any power steering while driving, your alternator won't be charging your battery, and your water pump won't pump water throughout your cooling system.

How do you know if your serpentine belt is slipping?

The symptoms of a loose serpentine belt include a loud squealing noise when the engine is started or when the steering is turned all the way to one side. A serpentine belt that keeps slipping off the pulley is another symptom of a bad tensioner.

What does a bad pulley sound like?

Squealing. When the engine is idling, a bad pulley may make a squealing sound. This is due to the bearings in the pulley going bad. The bearings may also make various other sounds such as clattering or even a rumbling sound, making the vehicle sound as if there was much more wrong than a bad pulley.

How much does it cost to replace a serpentine belt and tensioner?

The average cost for a drive belt tensioner replacement is between $211 and $239. Labor costs are estimated between $73 and $93 while parts are priced between $138 and $146. Estimate does not include taxes and fees.

Does the serpentine belt affect the transmission?

Effect of Serpentine Belts on Transmission. As a result, if the serpentine belt is worn out or breaks, it results in engine overheating and losing the powered steering and charging system.

Can a bad serpentine belt cause check engine light?

A loose or worn belt will cause ticking or rattling noises, poor engine performance and overheating, usually triggering the check engine light. If the timing belt breaks, the engine can't run — and on some engines that break can cause internal damage.

What does a bad water pump sound like?

A more likely failure of your engine's water pump is a bearing failure. A worn bearing in your water pump will usually manifest itself as pump noise as it will allow the pump pulley to wobble as it rotates. In extreme cases, you may be able to see the pump pulley or belt wobbling as your engine idles.

How tight does a serpentine belt need to be?

The required measure of tension in the serpentine belt is that it should not deflect more than ½ inch when twisted either way from the middle. If twisted more, the belt is loose, and if twisted less, the belt is too tight. Either of the positions does not work for the vehicle.

How many belts are in a car?

Most cars have one or two drive belts. It is also called a serpentine belt when there is only one drive belt in a car. Whether it is a drive or serpentine belt, it is a part of the accessories that drive a car's engine. The rubber-made component lasts for a long time, something between 40,000 and 70,000 miles.

Can a bad serpentine belt cause loss of power?

If the serpentine belt completely fails and breaks, then your car will break down. In addition, you will notice a loss of power steering, the air conditioning will not work, and the engine will no longer be able to be cooled like it should be.

How long does it take to replace a pulley?

Replacing the pulley should only take an hour or two, and the parts will vary in cost from one type of car to the next. How many parts need to be replaced and how long the repairs take will depend on how severe the damage is. If the pulley is simply loose, then replacing it will be simple and straightforward.

How long does a Toyota serpentine belt last?

100,000 miles