Why doesn't the Civic's RPM drop when releasing the accelerator?
1 Answers
The reason why the RPM does not drop after releasing the accelerator could be due to the throttle spring being in a compressed state for a long time, or there might be issues with the components or air intake leaks. If the car has just undergone maintenance, the slow drop in engine RPM is not considered a fault. The engine RPM is related to the number of work cycles per unit time or the effective power output of the engine, meaning the engine's effective power varies with different RPM levels. Throttle issues: If the throttle spring has been compressed for a long time, its tension decreases, leading to an increased throttle opening and higher fuel supply, which results in a slower return of the RPM needle. Component issues: Possible causes include a stuck accelerator cable or a faulty electronic throttle pedal sensor.