What Are the Reasons for Abnormal Noises When Starting a Car?
1 Answers
Abnormal noises when starting a car can be caused by the engine temperature being too low, thermal expansion of the car's three-way catalytic converter, transmission failure, or wear of the engine belt or chain. It is recommended to go to a 4S shop for maintenance and inspection to eliminate the fault. Reasons for abnormal noises when starting a car: Engine temperature too low: When the car is cold-started, the engine temperature is too low for it to work normally, and some abnormal noises are normal at this time. This is a normal phenomenon, and it will disappear as long as you wait a while for the engine temperature to rise to a normal level. Thermal expansion of the car's three-way catalytic converter: When there is an abnormal noise just after starting the car, it disappears after a while. This is caused by the thermal expansion of the car's three-way catalytic converter. It is also a normal phenomenon and can be ignored. Transmission failure: One of the reasons for abnormal noises when starting a car is transmission failure, which causes internal gears to rub and produce abnormal noises. This situation is more complicated and requires professionals at a repair shop or 4S shop to inspect it. Wear of the engine belt or chain: If the engine belt or chain is worn, it can also cause friction or abnormal noises due to idling when starting the vehicle. For safety reasons, it is best to replace the engine belt or chain directly in this case.
