What happens if you accelerate in neutral gear (N) with an automatic transmission?

[ORylee]

If you press the accelerator for a short time, there is no problem. However, prolonged acceleration in neutral gear (N) will waste fuel and cause the engine to overheat, leading to boiling. Below are some key points for maintaining your car's engine: 1. Choose the right engine oil: Select the appropriate grade of engine oil according to the manufacturer's standards. 2. Regularly replace the "three filters": The "three filters" refer to the air filter, oil filter, and fuel filter. 3. Maintain good crankcase ventilation: The PCV valve in the vehicle promotes engine ventilation, but contaminants from blow-by gases may accumulate around the PCV valve, potentially clogging it. 4. Regularly clean the fuel system: Periodic cleaning of the fuel system helps maintain the engine in good working condition. 5. Regularly service the radiator: Rust and scale can restrict the flow of coolant in the cooling system, reducing heat dissipation and causing engine overheating, which may even lead to engine damage. Regular cleaning of the radiator to remove rust and scale not only ensures proper engine operation but also extends the lifespan of the engine and radiator.

[SanJocelyn]

I once accidentally stepped on the accelerator while my automatic transmission car was in Neutral (N) gear, causing the engine RPM to surge with a loud noise, but the car didn't move. The reason is simple: N gear is neutral, which disconnects the transmission from linking the engine to the wheels, so power can't be transferred. This is purely a waste of fuel because the engine runs under no load, increasing fuel consumption and potentially accelerating engine wear slightly. Now, I've developed the habit of shifting to Park (P) immediately after stopping to avoid accidental neutral gear operation. Some people mistakenly use N gear to warm up the car in winter, but P gear is actually safer and more efficient. Regular transmission maintenance is also crucial for extending the vehicle's lifespan, as unnecessary high RPMs aren't good for the components.