Starter Motor Noise is one of the more unsettling sounds a vehicle can make, usually heard in the moment you turn the key. The starter is a small electric motor that spins the engine until it can run on its own, so any unusual sound during that brief cranking period is worth noticing. Not every … Read more
A radiator fan rattle is a metallic buzzing, clattering, or chattering sound that comes from the front of the engine bay, often when the engine is idling or the car has just been shut off. Many owners first notice it on a warm day or when the air conditioning is running. The noise is usually … Read more
Cooling fan noise is one of the most common sounds owners report near the front of the engine, and it often appears without any other warning. The noise may be a whir, a rattle, a grinding sound, or a loud click when the fan switches on. The cooling fan pulls air through the radiator to … Read more
Power steering noise is a common complaint, and it often starts as a faint whine that grows louder when you turn the wheel at low speed or while parked. Many owners notice it first on cold mornings or during tight maneuvers in parking lots. Most noises have simple causes, such as low fluid, a worn … Read more
Water pump noise is one of the more useful sounds your car can make, because it often appears before a cooling problem becomes serious. The water pump circulates coolant through the engine, and when its bearing or seal begins to fail, it can produce a whine, a grinding, or a rumble that changes with engine … Read more
Alternator bearing noise is a grinding, whining, or growling sound that comes from the alternator, the engine-driven generator that recharges your battery and powers electrical systems. Many owners first notice it at idle or when electrical loads rise, such as when headlights or the blower fan are on. This guide explains where the sound originates, … Read more
Pulley Bearing Noise is one of the more common sources of unexplained sound under the hood, and it often appears gradually as a faint whine or growl that grows louder with engine speed. Many owners mistake it for a failing alternator or water pump. Because the belt drive connects several accessories to the engine, a … Read more
Belt squealing is a high-pitched noise that often appears when the engine starts, during hard acceleration, or when the air conditioning cycles on. Most cases come from the serpentine belt, the single long belt that drives the alternator, water pump, power steering pump and other accessories. The noise is usually a warning rather than an … Read more
A heat shield rattle is a thin, tinny metallic buzz or chatter that often appears when a car is started, idling, or driving over bumps. Heat shields are thin metal panels that protect the floor, fuel lines, and nearby parts from exhaust heat, and when one loosens it can vibrate against the car body or … Read more
Catalytic converter rattling is a metallic sound, often heard during startup, idling, or when going over bumps, that many owners notice before any other symptom. The sound usually comes from underneath the car near the middle or rear of the exhaust. It can be harmless or a sign that the converter’s internal honeycomb structure has … Read more