宝马5系按点火开关后3-4秒才启动电机并且怠速熄火什么原因?

2025-03-13 08:16:56
推荐回答(2个)
回答1:

1、一般出现的是发动机为无怠速故障,根据发动机怠速要求进行调整,当发动机转速达到1800r/min时才能稳定运转,低于1800r/min时发动机逐渐熄火。对CO浓度调整螺钉进行检查,是否发现异常。对点火系和供油系进行检测,是否发现异常。最后,对怠速稳定阀的控制电流进行了测试,标准值430±30mA小30mA。在对怠速稳定阀进行更换并重新调速怠速及CO调速螺钉后试车,发动机怠速转速稳定在800r/min,熄火后再次起动,怠速即可正常。

2、分析:
怠速稳定阀的作用主要是稳定怠速,而该车怠速稳定阀的损坏,直接造成怠速不受控制阀控制而无法保持正常工作。

回答2:

您好:
对于您问的问题,如果电脑清楚不了故障码的话,就应该是怠速马达本身或相关电路有搭铁的现象所导致的,怠速马达都是一体的,无法拆开进行维修,所以必须要进行更换,希望我的回答会对您有所帮助。

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