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Is an Idle Speed of 800 RPM Normal?

1 Answers

Jose

07/29/25 9:09pm

An engine idling at 800 RPM with stable operation is generally considered normal. However, if the engine runs unsteadily or vibrates severely at 800 RPM, it indicates an abnormality. Below is an introduction to idle conditions: Normal Idle: When the vehicle is parked and the engine is started, the minimum stable operating speed is referred to as parking idle (the process of the engine transitioning from a cold idle state to reaching the normal operating temperature idle state is called warm-up or hot idle). Driving Idle: When the car is in gear without pressing the accelerator pedal or when the accelerator pedal is released while driving, maintaining the minimum throttle opening, the engine speed matches the parking idle speed, known as driving idle. Unstable Idle: Unstable idle is one of the most common issues encountered in engine maintenance. Incorrect diagnostic approaches can prolong repair time, reduce efficiency, and even lead customers to switch to another repair shop due to impatience.

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