b***r 发帖数: 390 | 1 请教个技术问题:发动机在运转的情况下,冷却风扇是否转动?
我发现我的车在发动机运转的情况下,前面的冷却风扇不转动,散热片是常温,不热;
同时大约一周冷却剂就会丢光。请教大侠,车子有问题吗? 多谢。 |
u****q 发帖数: 24345 | |
b***r 发帖数: 390 | |
L********0 发帖数: 476 | 4 不是。一般单速风扇设定的是冷却液温度达到93-95摄氏度的时候开始转,双速风扇设
定的是冷却液温度达到85-88度以上低速转,达到93-95度以上高速转。另外如果空调开
启则风扇始终运转(单风扇车型适用,有的车是有2个风扇的,1个管空调1个管引擎,
当然也有不少车是2个风扇但是同步运转的)。这个也可以作为test风扇好坏的方法。
【在 b***r 的大作中提到】 : 发动机运转的时候,发动机冷却风扇是否一直转动?
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m*****3 发帖数: 13701 | 5 No,有sensor控制. 你的车有啥灯亮着?读过 code 吗?另外显然 coolant 的桶漏了
,这玩意儿得修,你的车开起来以后 dashboard 上显示啥温度?
【在 b***r 的大作中提到】 : 发动机运转的时候,发动机冷却风扇是否一直转动?
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b***r 发帖数: 390 | 6
多谢各位的热心。dashboard现在发动机温度正常。但是engine check的灯亮了。
【在 m*****3 的大作中提到】 : No,有sensor控制. 你的车有啥灯亮着?读过 code 吗?另外显然 coolant 的桶漏了 : ,这玩意儿得修,你的车开起来以后 dashboard 上显示啥温度?
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m*****3 发帖数: 13701 | 7
这玩意儿别人看不到你的车,也没法帮你收拾,替你搜了一下,某个米国人写的,你瞅
瞅有用不:
There are three reasons that the fan would run at all times the ignition is
on;
1. The engine control computer thinks the engine is running hot. If the
coolant temperature sensor is damaged or the wiring to it is shorted this
will cause the fan to run
2. There is a fault code set in the engine computer that will cause it to
operate in a failure mode in that it turns the fan on to be sure the engine
will be cooled.
3. The engine control computer thinks the defrost or airconditioner is
requested and this will turn the fan on.
If you do not have the HVAC controls set to AC or defrost have the engine
codes read at an autoparts store to see if a code is set. If there is post
it here and I will help you decode it. You may have a check engine light on,
if you do that is another reason to have the codes read and may be the
cause of the fan running.
A fourth reason may be that the cooling fan control module mounted next to
the battery has failed and is causing the fan to run when power is applied
to it. If you have a voltmeter I can help you test this.
If none of the above reveal the cause you will need a scantool that is
capable of displaying data to see what the control computer sees and the
data that is out of spec can be identified
【在 b***r 的大作中提到】 : : 多谢各位的热心。dashboard现在发动机温度正常。但是engine check的灯亮了。
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