What Causes the Speed and RPM Not to Increase When the Accelerator is Fully Pressed?
1 Answers
Car accelerator pedal, intake system, fuel system, ignition system and other failures can all cause the speed and RPM not to increase when the accelerator is fully pressed: Car accelerator pedal failure: If the throttle position sensor is dirty or the voltage is unbalanced, it will cause electronic throttle failure, resulting in the speed not increasing when the accelerator is fully pressed. It is necessary to check the fuel pressure, cleanliness, and replace the fuel filter. Intake system failure: The engine needs sufficient air to work properly. If there is air leakage or blockage in the intake system, the car will experience reduced power, RPM not increasing, and body shaking when accelerating. It is necessary to check the ignition system, cylinder wires, spark plugs, etc.; check the cylinder pressure to see if the engine is missing cylinders; check whether the intake and exhaust pipes are unobstructed (catalytic converter blockage). Fuel system failure: If poor-quality gasoline is used, it can cause the fuel pump to burn out, catalytic converter failure, piston failure, etc., directly affecting the engine power, and easily causing the engine to stall, unable to accelerate, and RPM not increasing. It is necessary to check whether the gasoline quality is poor and replace it with better-quality gasoline in time. Ignition system failure: Ignition high-voltage wires rarely have problems. The main problems are in the ignition coils and spark plugs, as they are consumable parts. When the spark plug performance declines or inferior spark plugs are used, it will cause the car to accelerate weakly, shake when accelerating, and RPM not increasing. It is necessary to replace them with better-quality spark plugs in time.
