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2026-10-26 · 5 min read

Car Makes Noise Going Over Bumps — What Is It?

A clunking, knocking or rattling sound over bumps points to worn suspension parts. The location and type of sound tells you exactly what's worn.

Car Makes Noise Going Over Bumps — What Is It?

马来西亚的路况坑洞和减速带密集,悬挂系统承受的冲击比其他国家多得多。过减速带时有声音,通常代表某个悬挂橡胶件或金属连接件已经磨损。

咔嗒声(单一清脆声)

稳定杆连杆(sway bar link / stabilizer link)磨损:最常见的原因之一。连杆两端的球头磨损后,过减速带时产生清脆的咔嗒声,通常是单次声音。

稳定杆衬套(stabilizer bushing)磨损:橡胶老化后金属对金属,声音偏「咔」。

避震器上座(strut mount)磨损:方向盘也可能同时有异响,转方向时更明显。

低沉敲击声(咣咣声)

下控臂衬套(lower arm bushing)磨损:控臂橡胶件磨损后,金属控臂与副车架之间有松动,产生低沉的敲击声。

球头(ball joint)磨损:严重时同时感觉方向盘偏摆,过弯时更明显。

弹簧下胶(coil spring rubber)老化:减震弹簧底部的橡胶垫老化后,弹簧与控臂直接金属接触。

咣当声(较大、较松的感觉)

避震器失效:避震器内部损坏,液压阻尼消失,车身弹跳,过减速带「咣」的一声。同时感觉车身回弹不稳、高速飘浮。

排气管吊架断裂:排气管失去支撑,撞到车身,声音来自车底中段或后方。

如何初步定位?

听声音来自哪边(左前/右前/左后/右后)——缩小范围。

只过减速带有声还是坑洞也有?——减速带声音大多是衬套/连杆;坑洞声音更大可能是避震器。

转方向时也有声?——避震器上座或球头可能性高。

高速弯道也有声?——稳定杆相关零件。

结论

过减速带有声音不代表车子马上会坏,但悬挂零件磨损不处理会越来越严重,最终影响操控安全。4M CARCARE 提供免费悬挂检查,来店告诉我们症状,我们帮你找出哪个零件磨损,如实报价。

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