Walled Lake Car Owners Ask: Why Do I Need to Change My Serpentine Belt?
August 30, 2016
Any Walled Lake 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 Walled Lake 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 Walled Lake 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 Michigan 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 Walled Lake 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.”
ABC Auto Works
127 E. Walled Lake Drive
Walled Lake, Michigan 48390
800-742-4511
Need Service?
More articles from ABC Auto Repair & Tire Center

The Car Fluid Most Drivers Forget—And Why It Matters
October 25, 2026
Heres an automotive part you might not be familiar withthe differential. Its a component that transfers power from the driveshaft to the wheels. Its called a differential because the left and right drive wheels travel at different speeds when you make a turn. During that turn, the wheel on the ... More

A Sensor that Makes Sense
October 23, 2026
Theres an electronic device in your vehicle you may not even know about: the oxygen sensor. Your vehicle probably has more than one of them, and these oxygen sensors help your vehicle burn fuel efficiently, reduce emissions and protect important parts in your engine. An oxygen sensor senses how... More

Let's Clear the Air
October 11, 2026
So, back in the 1970s, automakers started equipping vehicles with a device that reduces harmful emissions before they even go out the tailpipe. Theyre called catalytic converters, and while they will likely last you years on your vehicle, they do wear out and eventually need to be replaced. Cat... More
