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原文：
A user's Honda car when the engine cooler, works well, but after the engine warm, there will be a strange surge phenomenon, and will idle up and down along the smooth volatility.
Cooling System Condition "disorder" is a fuel injection modelButterfly Valves
Honda cars idle speed control valve malfunction of the typical symptoms, change control valve is the only way to troubleshoot. However, at present most of the Honda cars are equipped with a cooling liquid heating control valves, Suo Yi Lai Shui for the owners, Xue Hui Xunsuzhunque to Zhenduancilei failure is the key to reducing maintenance costs.
Perhaps some maintenance technicians will be taken for granted that: idle fluctuation is due to electronic malfunctions, may in fact, is the mechanical failures of electronic failure.
It is worth mentioning that the original Honda cars used mechanical idle speed control valve has been eliminated, replaced by electric idle air control valve (EACV). In the OBDII system, electrical idle air control valve is the air flow control valve. Most Honda cars are equipped with engines idling speed control valve, the most common location is the installation of pressurized air into the room in front. There are also some Honda vehicles to be installed on the throttle.
Fast idle control valve of the internal structure, which includes a bronze of the thermal components (paraffin), spring loaded air bypass valve and a white plastic bushing. All the air will be through the bush at the Plug Valves
white hole into a central valve.
Most of the Honda car, fast idle speed needs "extra" air "around the" throttle blade, pressurized chamber through a separate channel, through the fast idle control valve, the last into the intake manifold. Note that, fast idle control valve is usually open, and with the engine temperature gradually closed.
Honda Idle Control Valve thermal element with a thermostat or other types of fast idle speed control valve for use as thermal components are installed in the lower part of the air bypass valve. When the engine warm, the cooling liquid to heat these components to make expansion. Promote the expansion of the air bypass valve components rose, while the central white hole sealing bushing. Because of its cut off the excess air, so the engine will return to normal idle speed.
Fast idle control valve may also be unable to open. If this occurs, the engine cooling rapidly after starting stall. At this point, control valves should immediately spin the top two screws under the control valve cover removed, check the idle control valve functioning. When the engine running cooler, should be able to feel the air bypass valve at theSafety Relief Valves
top of the suction. If you feel, then replace the valve, because it can not open.
The most common failure is the fast idle speed regulating valves in the engine warm, the valves not be closed. Failure occurred in the early stages of preheating the engine is not entirely the case, the slow response to fast idle control valve can cause idle fluctuation. As coolant temperature rises, heat-sensitive components will gradually expand, and promote increased air bypass valve until it into the plastic bushes. Once inside, bypass valve to stop the flow, thus closing fast idle control valve.
However, the aging of the thermal component can not be guaranteed as the coolant temperature increases year on year expansion that, when the engine does not require extra air for the idle, there is still excess air through the slow response of the fast idle control valves into the inside the intake manifold, thereby increasing the idling. When the engineInstrumentation Ball Valves
speed stays at a particular time (eg, idle), PCM signal device will be slow - closed throttle throttle position sensor (TPS) signal (about 0.5V or less) and relatively high engine speed signal (approximately 1100r / min). Then, the computer began to close the injector, resulting in engine surge phenomenon occurs. In other words, the aging of the thermal component can not close the air bypass valve, because after the engine fully warm, there will continue to surge phenomenon. At the same time, you will find the top of the air suction bypass valve, in his hooded top with a towel, it can eliminate surge phenomenon.
Any time, if the Honda cars idle control valve can not be closed fast, we must first make sure cooling system clean, adequate, and complete in a vacuum, and then carry out the relevant checks. When the engine at normal operating Instrument Manifolds
temperature, the hands touch the idle speed control valve at the bottom of the two hoses should feel hot. When their doubts, the coolant should be cleaned thoroughly and carefully inspect the hose, see if there is contraction or obstruction. Thermal oil sludge on the same device can also hinder its coolant temperature, speed of response.
原文来自： http://www.nytimes.com/1981/12/26/opinion/escape-valve.html
CHELSEA OIL LEAK LINKED TO TAMPERING WITH VALVES;是由 上海日美阀门制造有限公司提供的阀门新闻，中文译文仅供参考，以下提供站内导航搜索：
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以下是参考译文：
译文：本田轿车发动机快怠速阀故障
一位用户的本田车在发动机冷机时，运转良好，但在发动机预热之后，便会出现奇怪的喘振现象，而且怠速也会随之上下平稳波动。
冷却系统工况“失常”是燃油喷射型本田轿车快怠速调控阀故障的调节阀
典型症状，更换调控阀是排除故障的唯一方法。但是，目前大多数本田车都安装了冷却液加热式调控阀，所以对于车主来说，学会迅速准确地诊断此类故障是减少维修费用的关键。
也许有些维修技术人员会想当然的认为：怠速波动是由于电子故障引起的，可实际上，是截止阀
机械故障导致电子故障的。
值得一提的是，本田车系原来所采用的机械式快怠速调控阀已经被淘汰，取而代之的是电动式怠速空气控制阀(EACV)。而在OBDII系统中，电动怠速空气控制阀就是空气流量控制阀。大多数本田轿车发动机上都装有快怠速调控阀，其最常见的安装位置是在进气增压室的前侧。也有一些本田车将其安装在节气门上。
快怠速调控阀的内部结构，它包括一个青铜色的热敏元件(石蜡)、弹簧加载式空气旁通止回阀
阀门和一个白色的塑料衬套。所有的空气都将通过位于这个白色衬套中央的一个小孔进入阀门。
大多数本田车上，快怠速需要的“多余”的空气，“绕过”节气门叶片，通过增压室里一个单独的通道，穿过快怠速调控阀，最后进入进气歧管。需要注意的是，快怠速调控阀通常是打开的，并随着发动机温度的升高而逐渐关闭。
本田轿车怠速调控阀热敏元件同恒温器或其它类型快怠速调控阀使用的热敏元件一样，都安装在空气旁通阀的下部。当发动机预热时，冷却液将加热这些元件，从而使之膨胀。膨胀的元件推动空气旁通阀门上升，同时水力控制阀
将白色衬套中央的小孔密封。由于其切断了多余的空气，因此发动机将恢复正常怠速。
快怠速调控阀也有可能无法打开。如果出现这种情况，发动机冷却起动后会迅速失速。此时，应该立刻把调控阀顶部的两个螺钉旋下，将调控阀罩拆下，检查怠速调控阀的运转情况。当发动机冷机运转时，应该能感到空气旁通阀门顶部的吸力。如果感觉不到，那么替换阀门，因为其无法打开。
最常见的快怠速调控阀故障是在发动机预热之后，阀门无法关闭。在该故障出现的初期，在发动机不完全预热的情况下，反应缓慢的快怠速调控阀可能会引起怠速波动。随着冷却液温度的上升，热敏元件将逐渐膨胀，并推动空气旁通阀门上升，直到其进入塑料衬套中。一旦进入，旁通阀门将阻挡气流，从而关闭快怠速调控阀。
然而，老化的热敏元件不能保证随着冷却液的温度升高而同比膨胀，即当发动机不需要多余的空气用于怠速时，仍会有过量的空气通过反应缓慢的快怠速调控阀进入到进气歧管内，从而增加了怠速。当发动机停留在某特定转速时(如怠速)，PCM装置就会得到减速信号-关闭节气门的节气门位置传感器 (TPS)信号(大约0.5V或更少)和发动机相对高转速信号(大约1100r/min)。然后，计算机开始关闭喷油器，结果导致发动机出现喘振现象。也就是说，老化的热敏元件无法关闭空气旁通阀门，因为在发动机完全预热之后，还将继续出现喘振现象。同时，你会安全阀
发现空气旁通阀门的顶部有吸力，在其顶部用一条毛巾罩住时，可消除喘振现象。
不管什么时候，如果本田轿车的快怠速调控阀无法关闭，一定要首先确认冷却系清洁、充足、并且完全处于真空状态，然后再进行相关检查。当发动机处于正常工作温度时，手摸快怠速调控阀底部的两个软管闸阀
应该感觉到热。当对其表示怀疑时，则应彻底排净冷却液，仔细检查上述软管，看看是否有收缩或阻塞现象。热敏元件上的机油油泥同样也能防碍它对冷却液温度的反应速度。
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