Back to all

Aurora Car Owners Ask: Why Do I Need to Change My Serpentine Belt?

January 1, 2019

Any Aurora driver who understands preventive maintenance knows that “if it ain't broke, don't fix it” is bad auto advice. Replacing a part before it breaks is much less costly for Aurora residents than repairing the engine damage that comes after a part breaks or fails. A good example of this is the serpentine belt.

The serpentine belt gets its name because of its circuitous path around the engine. The serpentine belt is driven by the engine and powers a number of systems, as follows:

1. The serpentine belt spins the compressor that generates the cool air for the air conditioning system.
2. The serpentine belt powers the alternator. The alternator generates electricity for use in the vehicle's electrical systems and to charge the battery. Without the alternator, the battery wouldn't last more than a few miles.
3. In many Aurora residents' vehicles, the serpentine belt runs the pumps for both the power steering and the power brakes. In other vehicles, the power steering pump may be electric and the power brakes may use a vacuum boost.
4. On many vehicles, the serpentine belt powers the water pump. The water pump keeps coolant circulating through to maintain appropriate operating temperatures. In some Illinois vehicles, a timing belt runs the water pump.

When a serpentine belt fails, all of these systems fail as well, which can lead to engine impact.

Replacing parts before they break saves money for Aurora residents by preventing more repairs and the frustration of having your vehicle in the shop for an extended period of time. If you're looking for an adage to apply to good car care, you might remember the old story of how “for want of a nail, the kingdom was lost.”

Tuffy Tire & Auto Service Aurora
3190 N. Aurora Rd.
Aurora, Illinois 60502
630-898-6688

More articles from Tuffy Aurora

Automotive Tips from Tuffy Tire & Auto Service Aurora: Alignment Inspection

January 11, 2026

Uneven tire wear, the car pulling to one side or a steering wheel that is off-center are signs for Aurora drivers that their wheels may be out of alignment.When doing an alignment inspection, the service advisor at Tuffy Tire & Auto Service Aurora will inspect your tires for uneven wear as well a... More

If the Shoe Fits (Brake Shoe Replacement [Rear])

January 4, 2026

When it comes to brakes on your vehicle, we all know how important it is to keep them working well because they are vital safety equipment. After all, if you cant slow down and stop, you cant drive safely. While many vehicles use what are called disc brakes, theres another type of brakes that ... More

Braking Good (Brake Drum Replacement)

December 28, 2025

Maybe your vehicle feels like Breaking Bad. In other words, when you brake, things are bad. You may find it takes you a longer distance to stop, you feel a vibration, or its pulsating when you depress the brake pedal, or perhaps your vehicle pulls to one side. Those can be symptoms of failing b... More