Livonia Car Owners Ask: Why Do I Need to Change My Serpentine Belt?
November 17, 2019
Any Livonia 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 Livonia 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 Livonia 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 MI 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 Livonia 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.”
Auto Lab Livonia
36251 Five Miles Rd
Livonia, MI 48154
734-432-6000
http://www.autolablivonia.com
Need Service?
More articles from Auto Lab Livonia

Positive and Negative (Battery Care)
May 10, 2026
You notice when your smartphone's battery starts to go weak on you. It runs out of juice faster than it did when it was new. Bet you pay attention to that pretty closely. Unfortunately, many of us don't pay the same attention to the battery in our vehicles. If your battery got you through the ... More

The Key Won't Turn! (Ignition Problems)
May 3, 2026
You've just arrived at the store shopping and you're ready to head home. You put your key in the ignition and oh, no! The ignition won't turn! What do you do now? Don't panic. There are some things you can do to get going again. The first thing to do is see if you have a locking steering whee... More

Introduction to Diesels for Livonia, MI
April 26, 2026
Something you're going to be hearing a lot about around Livonia, MI, is diesel engines. We're not talking about semi-trucks and buses; we're talking about diesel engine cars, pick-ups and SUVs.Most people in MI are surprised to learn that around half the cars on the road in Europe have diesel eng... More
