大家好，我是车圈羊叔，一个从事汽车行业五年的自媒体人；汽车出现了问题，我们先别慌！有可能并不是故障引起的。有些车主认为汽车的年龄一到就爱出毛病，又得去汽修店送钱，钱包凉飕飕，这月准吃土。
汽车有时候觉得有问题，先别认为就是故障，有时候可能仅是虚惊一场。比如我们在开车的时候排气管往外流水，汽油在燃烧后除了产生尾气外，还有很多水蒸气，遇到气温较低的天气情况，水蒸气遇到冰凉的排气管尾部就会冷凝成水，这可不是啥毛病，而是正常的化学反应。
比如刹车盘上全是锈迹，一般车主会听从汽修厂的“建议”更换，但其实是个坑。家用车的刹车盘基本都是铸铁的，铁和空气中的水分子容易发生反应，会变成铁锈，在下雨天会更明显。这种表面的铁锈完全不影响汽车的刹车性能，我们在开车时多踩几脚刹车踏板就会没有了。
还有一些假故障挺唬人的，比如停车熄火一段时间之后，汽车的底盘有时会传出嗒嗒声，就像水滴不断地落在金属板上的声音，这其实是排气系统里的三元催化器发出的。我们在开车时，它一般能达到400℃至800℃的高温，熄火之后冷却，热胀冷缩反应后发出的声音。
再比如我们有时在起步挂档会发现档位不好挂，这可不是汽车变速箱出了毛病了，而可能是之前停车时齿轮咬合比较紧，摩擦力大所导致的，这种情况一般出现停在斜坡上的比较多。驻车齿轮的强度很大，这点力根本不会造成伤害。
如果往后再遇到这类问题，还分不清故障和虚惊一场的话，请听从羊叔我以下建议：随着汽车技术的升级，质量都比较过硬，一般不容易出现大毛病，只要仪表盘的故障灯不报警，没有太大的异响或抖动的话，都可以放心开。如果我们还觉得不太正常的话，多问问身边几个有经验的老司机，或者多看看羊叔我的文章呗！
End-羊叔我今天的唠嗑到这里就结束了，非常感谢大家的阅读！羊叔我每天会更新丰富多彩的汽车知识文章，欢迎大家关注我。
原创文章，作者：cesifu，如若转载，请注明出处：http://www.cesifu.com/article/39769.html
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