Another important thing to remember: always disconnect the battery when working near the tank. You don't want any accidental sparks from any electrical connections. Keep in mind that gasoline vapors are much more flammable then gasoline itself. An errant spark could cause an explosion. The bottom line is to think about safety at all times. Here are some things you should also consider:
Always have a fire extinguisher handy in case an emergency arises. Gasoline is highly flammable. When working around fuel and fuel line connections, don't disconnect any wires or electrical connections that may cause electrical sparks. Always remove the gas cap to relieve any pressure in the tank prior to working on the fuel system. Do not use a work lamp when working near fuel or fuel tanks. If you need some light, use a cool fluorescent lamp and keep it far away from the pump. Gasoline vapors are strong, harmful, and can cause you to become drowsy and not think straight. Always perform work in a well-ventilated area with plenty of fresh air blowing through. Always disconnect the battery when working on the fuel system. Leave it disconnected for at least 30 minutes to allow any residual electrical charge in components to dissipate. Keep plenty of paper towels on hand, and wear rubber gloves to prevent spilling gasoline on your hands Be well grounded - don't do anything that will create static electricity. Keep all cell phones and pagers a safe distance away.
如何换现代 Santa fe 油位传感器。
去年上半年刚把开了二十多万迈的97camry送走，修车工作已消停的大半年。 十一月份，我2007年 Hyundai Santa fe 刚过了八万多迈，终于出问题了。Check Engine Light is on。如图1。
燃油箱分为两个部分，一个是主油箱在第二排driver side 座椅下，另外一个是副油箱在第二排passenger side 座椅下，两个油箱都有油位传感器。网上建议要换就换两个。
我需要买油位传感器和通用油箱锁环扳手工具。在amazon上都有卖，两个传感器$140，扳手$44。以下是所有使用工具和配件（图2）。
图2
先用掉大约五分之四的油。这样在拆装的过程中不会有太多的汽油溢出。
拆装步骤如下： 1。拆掉第二排座椅。要去掉座椅脚下9个螺丝，如图3。
图3
2。打开两个油箱的维护封盖。没有什么诀窍，就是一点一点掀开。盖子底下是胶上的，要用工具把它分开。如图4。
3。仔细拔掉所有油管和电线。 网上说最好把油泵的电线拔掉，然后发动车，让发动机自动停车。这样可去掉油管中的油。总之要尽量减少汽油溢出。如图4。 4。用油箱锁环扳手拧开锁环。这是最费力的，最好用专用工具。网上有人用锤子和起子也可以打开。但也有人提醒别敲出火花。如图4。
图4
5。取出主副油箱里的Assemblies。如图5。 拆下老的油位传感器。
图5 6。装上新的油位传感器。按以上相反步骤复原。
装上新传感器后，油表立刻有了刻度。加满油，开了一个多星期，Check Engine Light is off，油表从满刻度到下半格没有出现问题，应该是修好了（图6）。
图6
我把老的油位传感器拆开看了一下，发现小电刷磨坏了，如图。估计它的工作原理是这样的，油浮子的移动改变电刷的结触点，从而该变了电阻。车的ECU根据不同的电阻测出油位。如图7。
图7
通过这次修理，我感觉如果以后油泵或相关的部件有问题也可以修了。不过但愿这事永远不要发生
谢谢阅读！
Another important thing to remember: always disconnect the battery when working near the tank. You don't want any accidental sparks from any electrical connections. Keep in mind that gasoline vapors are much more flammable then gasoline itself. An errant spark could cause an explosion. The bottom line is to think about safety at all times. Here are some things you should also consider:
Always have a fire extinguisher handy in case an emergency arises.Gasoline is highly flammable. When working around fuel and fuel line connections, don't disconnect any wires or electrical connections that may cause electrical sparks.
Always remove the gas cap to relieve any pressure in the tank prior to working on the fuel system.
Do not use a work lamp when working near fuel or fuel tanks. If you need some light, use a cool fluorescent lamp and keep it far away from the pump.
Gasoline vapors are strong, harmful, and can cause you to become drowsy and not think straight. Always perform work in a well-ventilated area with plenty of fresh air blowing through.
Always disconnect the battery when working on the fuel system. Leave it disconnected for at least 30 minutes to allow any residual electrical charge in components to dissipate.
Keep plenty of paper towels on hand, and wear rubber gloves to prevent spilling gasoline on your hands
Be well grounded - don't do anything that will create static electricity. Keep all cell phones and pagers a safe distance away.