Back to all

Ask Tuffy St. Johns: What Happens When a Serpentine Belt Breaks?

January 6, 2019

The serpentine belt is aptly named since it snakes around under your hood. It may lack its namesake's fangs, but it sure packs a wallop when it breaks.

The serpentine belt powers a lot of engine systems. It runs the alternator, which charges the battery; the water pump (on some vehicles), which cools the engine; the air conditioning, which cools the driver and passengers; and the power steering pump, which allows for easier steering. When the belt breaks, all of these systems shut down.

Okay, so maybe you can live without air conditioning and power steering for a while, but your battery can't live very long without an alternator, and when the cooling system goes down, your vehicle engine will overheat. That's why St. Johns drivers should never wait to get a serpentine belt replaced.

Serpentine belts are fairly inexpensive at Tuffy St. Johns in St. Johns . And they look downright cheap when you compare them to the cost of an overheated vehicle engine, a tow truck, time lost on the road, inconvenience, and the potential safety consequences of being stranded.

Good car care means never putting off preventive maintenance. Do yourself a favor. Ask your friendly and knowledgeable Tuffy St. Johns  technician to glance under your hood and give that serpentine belt a quick look-over.

Tuffy St. Johns
2770 Racetrack Rd.
St. Johns , Florida 32259
904.230.3363

More articles from Tuffy St. Johns

10 Things That Are Lowering Your Fuel Economy

February 15, 2026

Regardless of whatever current gas prices may be, if you could use less gas, wouldnt you? Well, here are 10 things that are robbing you of better fuel economy that you can change for the better: Not enough air in your tires. Underinflated tires have a smaller rolling diameter and more res... More

Go with the Flow (MAF Sensor Replacement)

February 8, 2026

If your vehicle has an internal combustion engine, it depends on two things to make propulsion power for you to be able to motor on down the road: fuel and air. The engine mixes the two in just the right proportion so that they can be ignited, creating a series of tiny explosions that are coordi... More

Knowledge is Power (Battery Testing)

February 1, 2026

Its likely happened to you once or twice. You head to your vehicle, open the door, turn the key and lo and behold, your battery is dead. Now youre stranded, may have to get a jump or a tow, and youll definitely be late for wherever you were headed. While your vehicle may sometimes give you warni... More