What does Subaru serpentine belt do?

The Purpose of a Subaru Serpentine Belt
The serpentine belt in a Subaru vehicle serves an important function in the engine. It is a long, flat, multi-ribbed belt that is driven by the engine’s crankshaft pulley. The belt is responsible for driving many, if not all, of the engine accessories, including the alternator, air conditioning compressor, power steering pump, water pump, and air pump.
In other words, the serpentine belt transfers power from the engine’s crankshaft to various components and systems in the vehicle, ensuring their proper operation. Without a functioning serpentine belt, these accessories would not be able to operate, leading to a loss of functionality and potential engine damage.
It’s worth noting that the serpentine belt is tensioned by a hydraulic or spring-loaded automatic tensioner, which helps maintain the proper tension on the belt. This ensures that the belt remains in contact with the pulleys and operates smoothly.
Overall, the serpentine belt plays a crucial role in the functioning of a Subaru vehicle’s engine and its various systems.
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Can you drive with bad serpentine belt?

Engine Overheating
Overheating can cause severe engine damage, including warped cylinder heads, cracked engine blocks, and blown head gaskets. This is one of the most serious risks of driving with a broken serpentine belt – more on that later.

Does serpentine belt affect driving?

While it’s not a fancy piece of machinery, its failure can prevent you from safely or comfortably driving your vehicle. Due to the importance of a serpentine belt, it’s critical you know how they work, the main warning signs your serpentine belt is failing, and when you should have them inspected.

What is the serpentine belt responsible for?

Serpentine belts help power your alternator, steering pump, and air conditioning, in some vehicles it powers water pumps. Your alternator keeps your car battery charged and powers your car’s electrical components. Your car wouldn’t start without it.

What happens if you don’t fix your serpentine belt?

If you drive with a worn-out belt, you’re risking the failure of your engine’s accessories. When the belt slips or breaks, your car’s functions, such as the alternator and power steering pump, will likely stop working. A failing belt may also damage the parts it powers.

How often do you change serpentine belt on Subaru?

50,000 to 100,000 miles
It’s not uncommon for a new Subaru serpentine belt to last for 50,000 to 100,000 miles, but this can still vary on factors like the model and trim of your vehicle. However, exposure to heat and friction breaks them down over time.

What are the symptoms of a bad serpentine belt?

Bad serpentine belt symptoms

• Squeaking, squealing or chirping sound from under the hood of the car.
• Check engine light or battery light is illuminated on your dashboard.
• A/C isn’t working.
• Power steering isn’t working.
• The engine’s temperature is high or overheating.
• Smell of burnt rubber.

Can I drive with a bad serpentine belt?

Despite its unassuming appearance, this integral part keeps multiple components of your vehicle running smoothly, including the alternator, power steering pump, and air conditioning compressor. Ignoring the signs of a worn serpentine belt can lead to severe engine damage and compromise your safety on the road.

Does a new serpentine belt make your car run better?

A failing belt may also damage the parts it powers. Dealing with a broken belt or hose is bad enough, but if your engine becomes damaged, it’s even worse. By getting your belt regularly replaced, you can reduce the risk of your car breaking down. This allows you to enjoy your car and drive worry-free.

What happens if serpentine belt is worn?

If your serpentine belt breaks, all of these systems will shut down and your vehicle will overheat. An unfamiliar noise or screech from the engine compartment is just one indication that your belt could be frayed, split, or worn out.

Will a new serpentine belt improve performance?

Serpentine belts give a very minimal horsepower increase. The main advantages of using them are simplicity and better engine harmonics due to running all accessories on a single plane.