丰田锐志2.5发动机怠速不稳故障分析与排除

摘要

电喷发动机怠速不稳,容易导致发动机熄火和车辆振动.本文以一辆丰田锐志2.5轿车怠速不稳为例,从怠速控制的功能、构造和工作原理出发、介绍故障诊断与排除方法,并分析其故障原因.%The unstable idling of EFI engine often leads to engine stalling and vehicle vibration. Taking this trouble on a TOYOTA REIZ 2.5 sedan as an example, the author introduces its diagnostic and clearing methods and analyzes its trouble causes from the funetion, structure and working principle of idling control.