怪毛病，请大家会诊！！

[fengrocco]

此情况发生三次了，每次都是行驶当中，每次都被吓的大汗满身。

几次都是行驶当中，轻点刹车时，突然熄火。引擎检查灯，电池检查灯，油压检查灯全亮了。脚刹固死，踩不动。每次都是在熄火滑行中用手刹停稳车子。然后归到停车档，重新打火，车症状消失。颇感危险！

今天回想一下几次的细节，每次发生时，都是我将暖风的旋钮打倒温度较高，风扇控制旋钮打到强风。出现症状后，我关掉暖风，或者将风扇打到微风，车子运转良好，战战兢兢开回家。

我不知道是刹车系统还是暖风系统的问题？有可能是相互的问题吗？不过，深感危险，如果是在高速行驶后果不堪设想。


车子是95年四缸佳美，请大家会诊！

[millermin]

刹车助力系统漏真空，导致熄火。如不用刹车时，症状不会出现，这种症状出现后，刹车虽不会失灵，但没有真空助力，会很费尽。你可以先检查刹车的master cylinder 附近的手指般粗的真空管有无破损。其他问题必需拆开vacuum assist。
暖风系统的故障应该和engine 冷却系统有关。

[fengrocco]

millermin.谢谢你回复。

车子是运行一段时间后，出现问题的，就是突然行使中熄火。在熄火前我也踩了无数次刹车，没有出现问题。熄火后，我把暖风温度和风扇转速都降下来，重新启动，在行使也无任何问题了。两个月前出现第一次，这么长时间一直到今天又出现，要漏真空的话，是不是刹车早不行了？可我平时只要没出现这种情况，刹车很轻松呀？

如果是刹车漏真空，不会就那一会漏吧？

我在怀疑有可能是暖风系统影响刹车系统吗？或这是两者巧合凑在一起了？

望大家继续指教。

[fengrocco]

每次出现状况都是运行了一段时间后。突然熄火的最后动作就是点了一下刹车。

如果是刹车助力漏真空的话，会是这样偶尔的熄火吗？

今天没敢开暖风，一切正常了，开了两个小时也没问题。

真让我纳闷，两个系统会相互干扰吗？比如说，风扇转速快了，暖风温度高了，影响刹车系统的某个部位，从而引起突然熄火？还是两个系统只是偶然的绞到了一起，主要的毛病就是刹车系统？那为什么夏天的时候从来没出现这样状况呢？

郁闷！！！

[millermin]

如果是熄火后才用刹车，就不应该和真空有关。行驶中的熄火多数因为点火问题，重点检查点火系统的稳定性，有无漏电，接地，接触问题。但无论如何，我也无法理解为什么和暖风有相干。

[AutoCalgary]

作者: fengrocco

每次出现状况都是运行了一段时间后。突然熄火的最后动作就是点了一下刹车。

如果是刹车助力漏真空的话，会是这样偶尔的熄火吗？

今天没敢开暖风，一切正常了，开了两个小时也没问题。

真让我纳闷，两个系统会相互干扰吗？比如说，风扇转速快了，暖风温度高了，影响刹车系统的某个部位，从而引起突然熄火？还是两个系统只是偶然的绞到了一起，主要的毛病就是刹车系统？那为什么夏天的时候从来没出现这样状况呢？

郁闷！！！

有些现象属于巧合现象，此情况可能属于汽油泵或点火系统高温工作不良，当然我不知道你的是什么车。

[fengrocco]

车子是95年4缸佳美.

熄火前最后的动作是踩了一下刹车.一熄火刹车就固死了,踩不动了.

[fengrocco]

诚求真知灼见。

如果我去CT检测的，从哪里入手更直接一些？检测哪几个方面？

真心谢谢大家。

[安全第一]

都10年的车了，估计是热稳定性不好，而且有可能是控制电路。建议你不要把风扇和暖气打到最大，再开一段时间观察。

[AutoCalgary]

作者: fengrocco

车子是95年4缸佳美.

熄火前最后的动作是踩了一下刹车.一熄火刹车就固死了,踩不动了.

我猜想是不是在你 踩刹车前车已经灭了滑行，而你没注意，踩刹车时才发现？（因为刹车硬而给你的印象深）。这点很重要对于判断。

[millermin]

"熄火前最后的动作是踩了一下刹车" 。 从这话看是漏真空。熄火前和后的使用刹车是判断故障的关键。我的理解是一踩刹车力马熄火。

“一熄火刹车就固死了,踩不动”。 这个现在还算正常。因为engine停止工作，刹车失去power，自然费尽。

作者: fengrocco

车子是95年4缸佳美.

熄火前最后的动作是踩了一下刹车.一熄火刹车就固死了,踩不动了.

[arli]

some sensor in ignition system ?

[samqyang]

Kind of personal feeling, somewhere in electronic system not contacting very well;

Please check all the wires you can reach and the Jie1 Di4 Xian4 status, rescue all the possible connection points; Use a WangYongBiao test on it;

How many years you didn't change your battery? I would suggest If > 4, replace it with a new one if possible;

This problem is really tricky, did you feel anything abnormal recently or did you do something special with your car? Try to recall anything you touched before and after it happened;

Maybe only yourself can save your car; Is there any certain pattern before the car totally stalled?

The fan system, lights and all the engine electronic systems will compete for the current produced by the alternator when car is running (when alternator can't provide enough current, for example, when you heavily use high lights, air conditioning in winter, the battery can and have to compensate the power into the system). Base on what you experienced, 暖风的旋钮打倒温度较高，风扇控制旋钮打到强风, then engine stalled;

Unfortunately, temperature drop, wet and salty road, moisture of melt snow, all are bad factors for the electronic system; My battery is obvious has less power than the summer time;

That's why, my personal feeling is Jie1 Di4 Bu4 Liang2, system lack of electronic power (including Battery and Alternator), and higher current static leak;

作者: fengrocco

此情况发生三次了，每次都是行驶当中，每次都被吓的大汗满身。

几次都是行驶当中，轻点刹车时，突然熄火。引擎检查灯，电池检查灯，油压检查灯全亮了。脚刹固死，踩不动。每次都是在熄火滑行中用手刹停稳车子。然后归到停车档，重新打火，车症状消失。颇感危险！

今天回想一下几次的细节，每次发生时，都是我将暖风的旋钮打倒温度较高，风扇控制旋钮打到强风。出现症状后，我关掉暖风，或者将风扇打到微风，车子运转良好，战战兢兢开回家。

我不知道是刹车系统还是暖风系统的问题？有可能是相互的问题吗？不过，深感危险，如果是在高速行驶后果不堪设想。


车子是95年四缸佳美，请大家会诊！

[samqyang]

"不过，深感危险，如果是在高速行驶后果不堪设想。"

I suspect, if you really driving on the highway quite often, this phenomenon may not happen at all;

But do not gamble on this;

At least, I found one opinion is right, in the winter, every factor is actually decrease the power of battery, drive on the highway once per 2 or 3 weeks for an hour return trip (~100KM) can give your battery a good charge, depends on how efficient your alternator and how old is your battery is, there is a balance point for charging and release power of the battery against alternator, usually 1600 RPM up to 2000 RPM of engine speed, you reach this balance, if you drive on the highway, 100KM/H, usually 2500-3000 RPM, the battery is charging;

So please check your not only your battery but also alternator, a new battery with a malfunctioning alternator may only be able to give you a few weeks relief;

Good luck and please let us refreshed;

[arli]

By your means, if you run your car in idle speed for 4hrs, the car's battary will be dead?

[samqyang]

Just a piece of mind try to help, if you have a pretty new car, the balance point RPM may much less than a old car;

Like an old man, not everything still functioning as it was used to;
The alternator produce less power, the resistance getting bigger; especially the corrosional contact point among the wires and components;
And for battery itself, like I said when >4 years the recharging ability drop, the weak cold AMP capacity, the frozen whether; Not only some of us experience harder start in winter but also at any given time if system require a big amount current continuously, the whole electronic may not be able to provide it.

According to what had happened to the above owner, he suspect that the light touch of the brake pedal triggers the incident when using the biggest scale of the heat fan (everybody agrees that fan motor rotating may consume quite a big amount of the current), therefore I guess one possible reason is when he touch the brake pedal with maximum heat fan running, a instant big amount of current surge required to help braking (or also might be a short circus due to somewhere wrong) , and system can’t afford it then blow up;

Just a guess, not my car, some other details I really don’t know; I would suggest that the above car owner to close monitor the incident when it happens, carefully recall or record anything suspicious when it happens, And try something not cost too much and always good to the car first, it might be better than pay a lot of blooding money to named freak garages. I believe usually for a car there is nobody can have better sense than the one who always ride on it; Like myself, I don’t even necessary to use a gauge testing my tire pressure , instead base on the comparison of how rough the driving is and how hard the steering is and the outlook shape of the tires now and before , I always knew whether the tires are over inflated or under inflated;

作者: arli

By your means, if you run your car in idle speed for 4hrs, the car's battary will be dead?