Common Engine Noises & What to Do When You Hear Them

Your car has its own way of communicating, and often, its “voice” comes in the form of engine noises. While some hums are normal, certain sounds are urgent cries for help. If you’re driving through Omaha and notice a new sound under the hood, it is important to identify it before a small fix turns into a massive repair bill.

Here are the most common engine noises and what you should do about them.

Engine Squealing Or Chirping

If you hear a high-pitched squeal that gets louder as you accelerate, you are likely dealing with a worn or loose serpentine belt. This belt powers your alternator, power steering, and air conditioning. Ignoring a squeal while commuting in Columbus could result in the belt snapping, leaving you stranded on the side of the road.

Engine Knocking Or Ticking Noise

A repetitive knocking sound, often called “engine knock,” is usually a sign that the air-fuel mixture is igniting incorrectly in the cylinders. This can be caused by low-quality fuel or, more seriously, worn engine bearings. If you hear this metallic knocking, pull over safely and check your oil levels immediately.

Engine Hissing

A hissing sound from the engine usually indicates a leak. This could be a vacuum leak, which impacts engine performance, or a coolant leak, which can lead to overheating. If you spot steam or smell something sweet—like maple syrup—your cooling system needs professional attention right away.

What Should You Do If You’re Hearing Engine Noises?

Whether you hear a hissing sound from the engine or hear a squealing noise while accelerating on the roads of Elkhorn, your car is trying to tell you something. The general rule for engine noise is simple: if it’s new and it’s loud, don’t wait. Most engine issues are progressive, meaning they only get more expensive the longer you ignore them.

At Sid Dillon Cadillac-fremont, our factory-trained service technicians have the diagnostic tools to pinpoint exactly where that noise is coming from and fix it right the first time. Schedule an appointment with us today, and please don’t hesitate to contact us with any questions.