Back to all

A Most Important Part (Serpentine Belt Replacement)

February 8, 2026

Your vehicle’s engine is an engineering work of wonder with many complex parts working in harmony to get you down the road. One of those simple but important components is called a serpentine belt. It is driven by a pulley on the engine and transfers that power to many of your engine’s most important components.  The serpentine belt may drive the alternator, water pump, power steering pump and air conditioning compressor.  

When it’s working like it should, you won’t even notice the serpentine belt.  But when it starts to fail, you may hear a squealing noise coming from under the hood as the belt starts slipping.  Heat and time take their toll on the serpentine belt, causing it to crack or even to start shredding.  When this happens, it may not drive your alternator correctly, and your battery light may come on.  If the water pump isn’t turning, your engine may overheat, causing the heat gauge to show hotter than usual.

When the serpentine belt isn’t doing its job, it’s important to get it serviced very soon.  Letting it go too long can result in many more expensive repairs to multiple parts on your vehicle, especially if the belt breaks.  

Regular vehicle maintenance is important, and an inspection of your serpentine belt should be one of those things you should have one of our technicians do periodically.  While the belts can last for years, it’s important to detect any beginning of wear earlier rather than later.  In addition to the condition of the belt, the technician can also check to make sure pulleys are aligned properly and that the belt is routed correctly.  

Your vehicle’s serpentine belt is one of those components that you won’t even notice when it’s doing its job, and maintaining it will help you avoid surprises at the worst possible time.  

Tuffy Bloomington
1505 East Vernon Avenue
Bloomington, Illinois 61701
309.662.0537

More articles from Tuffy Bloomington

No Fuel-ing! (Fuel Filter Replacement)

February 1, 2026

Your vehicle has a few filters you might be somewhat familiar with. Theres the oil filter that removes impurities from your engines oil, and a couple of different kinds of air filters that prevent contaminants from getting into the engine and the cabin. But you may not know that your vehicle als... More

Power Steering Pump Replacement

January 25, 2026

When youre driving and you hear a squeal or groan when you turn, it may be a sign your power steering pump is on its last legs. The same is true if you feel your steering is slipping or doesnt respond to your hands like it used to. Precise, responsive steering is, of course, important when it ... More

Don?t Meddle with the Pedal (Brake Caliper Replacement)

January 18, 2026

If you drive a newer vehicle, chances are it has disc brakes, and one of the components of that type of brake is called a brake caliper. The caliper allows the pressure from your foot on the brake pedal to eventually move brake pads against discs in your wheels, which then slow and stop your veh... More