What Causes Abnormal Noises When Starting the Vehicle?

[DelGenevieve]

Here are the reasons and solutions for abnormal noises when starting the vehicle: Transmission noise: If the car makes abnormal noises at idle and the noise disappears when the clutch is pressed, it indicates that the noise comes from a transmission fault. Transmission noise is generally caused by bearing or gear wear. Solution: Since the transmission has many components and the causes of noise are complex, any abnormal noise should be promptly repaired (transmission repair costs are high, so regular inspections and frequent oil changes are essential). Engine compartment noise: Some sounds from engine vibrations are normal, but there are exceptions, such as the high-pitched squeal of a belt, which is usually caused by belt slippage; another example is the sharp sound of metal friction, which is often due to damaged bearings in the generator, water pump, or power steering pump. Solution: If there is a sound of air leakage from the engine, it may be caused by a blocked exhaust system, a leaking or broken vacuum tube. If there are abnormal noises inside the engine, these are usually major faults, and it is best for the owner to send the vehicle for inspection as soon as possible.