Reasons for High Engine RPM but Low Vehicle Speed
1 Answers
Reasons for high engine RPM but low vehicle speed may include throttle valve malfunction and other causes. Below are detailed explanations of the potential faults: Throttle Valve Malfunction: The throttle valve is a controllable valve that regulates the flow of air into the engine. After entering the intake manifold, the air mixes with fuel to form a combustible mixture for combustion. If the throttle valve malfunctions, causing it to open suddenly, the engine RPM may spike abruptly. Fuel Pump and Fuel System Faults: Fuel injector leakage or clogging can prevent proper fuel injection as commanded by the electronic control unit, resulting in an overly rich or lean mixture. This may cause poor performance in individual cylinders and rough idling.