What Causes the Whining Sound of the Engine at Low Speed?
1 Answers
Introduction to the causes of abnormal engine noise at low speed: 1. Engine noise: If the internal components of the car engine, such as pistons, valves, gears, and camshaft bearings, have excessive clearance or are damaged, intermittent or continuous "clanking" metal knocking sounds or irregular metal friction sounds may occur, indicating significant wear of engine parts. 2. Dashboard noise: Poor assembly craftsmanship by car manufacturers often leads to loose or unstable connections in areas such as door panels, glove compartments, air vents, and dashboard panels, resulting in friction. When driving on bumpy roads, vibrations can cause repeated rhythmic noises from internal loose parts, and sometimes a sudden "clunk" sound may occur. However, it does not affect the reliability or driving safety of the car. 3. Wheel noise: Rusty brake discs or trapped sand and dirt can produce sharp squealing sounds during braking. There's no need to panic, as the solution is simple—rust will wear off after running for a while, and sand or dirt can be cleaned manually with water. 4. Chassis noise: When encountering bumps, "thud" or "clicking" sounds may occur, mostly due to loose suspension shock absorbers or connecting components. This situation requires urgent attention as it can severely affect driving safety.
