刹车失效怎么解决

2019-07-22 作者：chenmiaoling

　　【太平洋汽车】如果发现车辆刹车失效，松开油门踏板，踩住离合器来降档达到发动机产生牵引力的目的。脱开高速挡挂入空挡，然后迅速松开离合器，再猛轰一脚空油，顺势从空挡换入低挡。但要注意手刹不能拉紧不放，也不能拉得太慢。要分几次拉紧、松开、拉紧、松开。

刹车系统不会无故失灵，一般在发生刹车失灵前，通常都会有一些刹车失灵的征兆。比如说，刹车无力、刹车抖动、刹车变硬、刹车踏板不回位、刹车盘异响。

1．刹车无力：刹车无力通常是有三种情况造成的。一是，刹车片或者刹车盘出现问题；二是，刹车分泵和刹车总泵的油液出现问题，可能是刹车油不足，或者刹车油含水量过高；三是，刹车制动管路进入空气。

2．刹车抖动：刹车抖动分为两种情况：一种是，汽车在高速行驶过程中，正常刹车出现刹车抖动，可能是刹车片的问题，可以通过更换或者打磨刹车片来解决。第二种，急刹车时出现刹车抖动，这属于正常现象，因为急刹车会触动汽车的ABS防抱死系统。

3．刹车变硬：刹车变硬是指踩刹车时，感觉刹车踏板又高又硬，可能是刹车系统的单向阀出现了故障，只需要更换刹车系统的单向阀就可以了。

4．刹车踏板不回位：刹车踏板不回位是踩刹车时，刹车踏板踩下后弹不回来，这样可能是刹车油缺失，也可能是刹车总泵、刹车分泵出现故障。

5．刹车盘异响：刹车盘异响是在踩刹车踏板时，刹车片和刹车盘出现了刺耳的金属摩擦声，这可能是刹车片的胶皮磨损严重，导致了刹车片背板跟金属刹车盘摩擦造成的，这样建议尽早更换刹车片。（图/文/摄：太平洋汽车网陈妙玲）

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