danny2004

车冷不叫, 热了以后就不时的尖叫. 不定时. 无规律. 原以为是风扇问题. 但在修车行时, 风扇转了又不叫. 要说是大问题吧, 在高速路上跑了几个月也没事. 但尖叫声很大, 搞得我很紧张. 请高手指点. 谢谢.

哈尔滨南人

什么声音？摩擦音、报警音、排气音........
详细的说一下，没准有人可以帮你。 :confused:

DonCherry

尖叫声 is difficult tell on paper, different people make different 尖叫声, so do cars.

But I think it comes from belts. Next time, when it makes 尖叫声, stop car, open
the hood and see where it comes from.

danny2004

谢谢答复.皮带是新的,换新的前就听到有尖叫声,吱的一声惨叫,象金属磨擦声.停车时打开车前盖,就几乎没响,运行中响.越热响得越频繁,而无规律.

temp_01

94 swift
去年1月份换过半water pump之后, 天冷刚启动时, 哨叫几下, 最多30秒后就不叫了. 不知道什么毛病.

在叫的时候, 脚把Clutch 抬起一点, (Manual transmission), 发动机转速低一点的时候, 叫声就小了或者消失; 把Clutch 踩下去, 叫声又变大.

请专家诊断.

DonCherry

The technican might tight the belt too much, not in the proper range,
or the water pump is not that good.

You can ask them double the belt tension. Or just the wait, the belt
will loose a bit after a while. But after a certain amount of time, it still too
tight, you need go back to that garage.