High-Pitched Squeal You may hear this sound while accelerating or right after starting when the engine is cold. Thumping If you notice a thumping sound and a bumpier ride while you drive on smooth roads, check the air pressure in your tires. Knocking The dreaded knocking or pinging sound while accelerating could indicate a serious problem with your engine.
Whistling Your engine should not whistle while it works. Popping or Sputtering These sounds are usually heard coming from the front area of the car and may suggest that the emissions system, fuel system, or ignition system is struggling to operate properly. Groaning The power steering system is a hydraulic system that aids in turning. Squeaking Noise The most common reason your vehicle may make a squeaking noise when driving is due to worn brake pads.
Clunking This sound could be caused by several different things depending on where the noise is coming from. Email me this coupon. Print this coupon. Click the button below to print. Print Coupon. Connect With Us. Privacy Policy. Within these noises are a few scenarios when these sounds present themselves; constant, intermitted, when the engine is cold or hot. Sounds of this nature are usually caused by a roller bearing going bad on one of the engine accessories such as an alternator, water pump or idler bearing.
The serpentine belt can be showing signs of wear as well or a worn out tensioner that is not supplying adequate pressure to the belt. Both of these noises can come and go and occur at different times while driving. As drive belt components age they are subject to many hot and cold cycles which causes the material such as the rubber on the serpentine belt to wear and glaze over which causes the belt to lose traction. This traction loss it followed by a vibration which causes the squealing noise which usually occurs on engine start up or when accelerating.
If the tensioner or an accessory fails the price will vary depending on the particulars of the repair. The serpentine belt is designed to drive the accessories such as the alternator, air conditioner compressor and water pump on most engines. When this belt starts to wear it produces a squealing noise at engine start up and under engine acceleration. Stand in front of the car with the hood open. Make sure the car is in neutral with the park brake on, or in parking gear before starting the car.
Listen carefully to see if you can pinpoint the general section where the noise is coming from. If the sound is an actual "squeak" it will usually come from the alternator region, or the belt that drives it. This the top cause of a squeak when an engine starts. A squeak coming from the alternator can be caused by three primary problems. The alternator belt or serpentine belt can be worn out, the pulley is not working correctly or the internal bearings are worn out.
The belt can be serviced by a competent do-it-yourself mechanic. Inspect the belt for cracks and fraying, and see if it is loose. When you accelerate or make a U-turn, the squealing gets louder and more pronounced. Although there are a few causes of a squealing engine, one of the most common is a bad or failing serpentine belt. The serpentine belt — or drive belt, as its also known — plays a vital role in the engine. Therefore, when a serpentine belt goes bad, these accessories stop working.
Think you might have a bad serpentine belt? A telltale sign is that the engine squealing comes from the front of the vehicle and that it persists. Belt squeaking is also especially pronounced when accelerating, on startup, and when making a U-turn. The noise is loud and sounds like a squeal, loud chirp, or squeak. This article outlines some other problems you might notice if your belt is squeaking and ways to tell if your serpentine belt is failing.
A lousy belt is hard to miss.
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