What are the reasons for engine revving without acceleration when pressing the accelerator harder?
2 Answers
The reasons for engine revving without acceleration when pressing the accelerator harder are: 1. Issues with the vehicle's transmission, causing power disconnection and resulting in revving; 2. Malfunction of the throttle position sensor in the vehicle model; 3. Faulty engine throttle position sensor; 4. Blockage in the vehicle's intake tract or air filter; 5. Clogging in the fuel system. The accelerator, also known as the "throttle" or "air valve," refers to the control device that regulates engine power (thrust). In piston aircraft engines, the throttle controls the carburetor's throttle valve opening to regulate cylinder filling, thereby determining the engine's output power.
I've encountered this issue before where pressing the accelerator hard only resulted in the engine roaring loudly without any increase in speed, which was quite alarming. A common cause is severe clutch wear in manual transmission vehicles. Once the clutch plates age or there's insufficient fluid, power fails to reach the wheels, leading to free spinning. For automatic transmission cars, low transmission fluid levels or internal malfunctions can cause similar symptoms. Additionally, it might be related to engine issues such as belt slippage, insufficient oil pump pressure, or faulty sensors. I recommend starting with simple checks like inspecting the clutch fluid or transmission fluid and promptly replacing any worn components to avoid accidents at high speeds. Avoid frequently flooring the accelerator during daily driving, and regular maintenance can prevent such issues, saving money and ensuring safety.
