二、故障现象描述
车辆行驶中反映发动机水温过高
三、故障分析思路及排除方法
1、基本检查:冷却液管和水箱没看到明显渗漏，防冻液液位正常
2、ISID快测，有以下相关故障码：2E82DME电动冷却液泵，关闭2E81DME电动冷却液泵转速偏差。
3、走检测计划如下
4、检查水泵插头连线，电压和PWM信号正常。
5、电脑激活电子水泵，用手触摸水泵壳体，有工作的震动感。
6、拆下水泵，转动水泵叶轮，有明显的卡滞感，但水泵的叶轮没有卡滞物。
7、更换水泵后试车正常。
电子水泵的工作原理
泵内集成的电子装置执行两个基本任务：调节并提供电压和电流，从而使EC 电机 和冷却液泵运转。按照发动机管理系统的要求，以调节泵 转速并向发动机管理系统反馈相关信息的 方式，调节冷却液流量。
拆检水泵
好几部车辆因为电子水泵转速差故障导 致水温高报警，但其原因是什么呢？拆下水泵后，发现水泵转子的涂层裂开 了，变大了，与定子滑套摩擦。
拆检水泵（完全卡死）
1、我们分别找了两个电子水泵进行了分解，水泵转子的涂层脱落，导致运转产生摩擦甚至卡死，引发发动机水温高报警。
2、也许是涂层质量问题，也许因为紧靠发动机，长时间高温导致水泵内涂层老化。
原创文章，作者：cesifu，如若转载，请注明出处：http://www.cesifu.com/article/28800.html
微信扫一扫 
支付宝扫一扫 相关推荐
-
冬天车油耗更大？二十年老司机，教你冬天省油技巧，全在空调上！
现在虽然说都是已经到了19年的二月份了，但是气温还是整体偏低的，特别像小编在的江南地区，个个地方都是有不同程度的降雪发生，老一辈的人把它称为了“倒春寒”大家都是或多或少的发现，一到…
-
再等7天！不足9万起的大众suv将上市，标配LED大灯，哈弗H6怕否？_大众汽车,大众捷达,哈弗H6,国民神车来了,原汁原味的德系SUV,大众途观,运动型多用途车,长城哈弗,中国第一汽车集团,大众辉腾,设计
“ 一般比较熟悉车市的朋友都知道，一个汽车企业如果要取得整体上较好的市场销量表现的话旗下必须要有丰富的车型数量，而说到拥有丰富车型的车企，那么大众汽车肯定就是首当其冲的…
-
这3款高性价比新能源汽车，买到就是赚到！
现在路上的汽车是越来越多了，各种各样的汽车，一般的，昂贵的，可以说比比皆是，今天跟大家介绍三款非常划算的新能源汽车，非常适合想挑性价比的朋友们！ 一、荣威marvel x，补贴后售…
-
烂大街车不买？但这几款车不选还真没谁啦！
车知事经常会遇到这样的问题：我的预算是几万几万，你给我推荐个车呗。每每这个时候真的是非常慌张，然后反问，你喜欢SUV还是轿车？你偏爱国产还是日系？忍不住为自己的机智点个赞。 但车知…
-
2.5秒破百的国产车，颜值帅过GT-R，纯手工打造考虑一下？
自主品牌，这几年一次又一次的刷新着人们对它的认知，从颜值、配置、销量的颠覆，在到技术上的逆袭，如今的自主品牌可谓势头正盛，尤其是对于新能源市场，在政策的帮助，以及策略的猛攻之下，自…
-
中汽协：豪华车价格大幅下探，购买的人越来越多
中国汽车消费市场发生重大变化，不仅新车销量持续下滑，消费领域也向豪华车市场倾斜。 日前，中汽协等单位共同发布《汽车工业蓝皮书：中国汽车工业发展报告（2019）》，报告指出2018年…
-
聪明人还看啥朗逸，这合资B级车才12万，起步6气囊油耗仅4毛
聪明人还看啥朗逸，这合资B级车才12万，起步6气囊油耗仅4毛 聪明人还看啥朗逸，这合资B级车才12万，起步6气囊油耗仅4毛。相对于A级车，B级车不仅在空间的表现上据有优势，而且在整…
-
别克君威引擎盖更换判断，判断思路及疑难问题解析
以前的文章我们会介绍一些车辆年款的区分和事故的判断，今天我们来说说面对一些疑惑问题，我们的整体解析思路； 最近看了一台别克君威，我们就以这台车的引擎盖为例，来说说整个引擎盖的判断思…
-
价格战也带不动市场了？
在市场格局变革之下，如何才能在竞争中胜出？价格战似乎并不能把车企从萧条中拉出来。 记者｜杨晶 没有哪一年像2019年这样，从开年到现在，有的汽车厂商已经进行三轮“价格战”了。 时间…
-
“堵你100天，谁挪谁孙子！”车位被占引发一场“大战”，结果……
这两天，一段在杭州某小区地下车库的“堵车”视频引发众人关注。视频里，一辆黑色路虎车和一辆白色轿车将一辆别克GL8堵在车位里，视频拍摄者还立下战书：“谁先挪走谁是孙子。” 这是怎么回…
评论列表（61条）
I took away a great deal from this.
Such a valuable insight.
I particularly admired the style this was laid out.
I really enjoyed the way this was laid out.
I discovered useful points from this.
This post is insightful.
This submission is incredible.
Thanks for sharing. It’s well done.
I’ll definitely recommend this.
I absolutely liked the approach this was written.
I truly admired the manner this was written.
I gained useful knowledge from this.
More blogs like this would make the internet more useful.
Such a useful insight.
You’ve clearly researched well.
Such a valuable insight.
I found new insight from this.
I truly admired the approach this was written.
Such a valuable insight.
Such a useful bit of content.
The detail in this content is exceptional.
I particularly valued the manner this was presented.
More content pieces like this would make the internet more useful.
This write-up is informative.
Such a useful resource.
Such a informative resource.
This piece is well-written.
I really enjoyed the way this was explained.
I particularly enjoyed the manner this was written.
Thanks for creating this. It’s top quality.
I’ll surely recommend this.
You’ve clearly researched well.
Such a informative insight.
More posts like this would make the web a better place.
More posts like this would make the internet more useful.
The breadth in this piece is remarkable.
This post is fantastic.
I truly enjoyed the style this was presented.
More content pieces like this would make the internet more useful.
The breadth in this content is exceptional.
I truly liked the way this was laid out.
Such a informative bit of content.
Uncertain whether a secured loan is right for you? Understand the benefits, such as lower interest rates and increased flexibility.
Not sure if a secured loan is right for you? Understand the benefits, such as more favourable terms and increased flexibility.
Discover how a homeowner loan can help you obtain the money you need without selling your home. Compare lenders and customise a plan that fits your needs.
Home equity release may provide the financial support you’ve been needing. Learn how to use the equity tied up in your home without having to downsize.
Thinking about releasing equity from your home? Review top lenders and understand your financial responsibilities before making a decision.
Equity release solutions may provide the financial freedom you’ve been needing. Learn how to use the equity tied up in your home without having to downsize.
Home equity release may provide the financial support you’ve been looking for. Learn how to use the equity tied up in your home without having to move.
Unlock the value in your property with a reliable home equity loan — suitable for covering home improvements, large expenses, or refinancing.
Release the value in your property with a reliable home equity loan — ideal for covering home improvements, major purchases, or refinancing.
Not sure if a secured loan is right for you? Understand the benefits, such as more favourable terms and increased flexibility.
Home equity release may provide the financial support you’ve been needing. Learn how to tap into the equity tied up in your home without having to downsize.
Not sure if a secured loan is right for you? Explore the benefits, such as lower interest rates and larger borrowing amounts.
You may be able to secure larger loans and enjoy lower monthly repayments by taking out a loan secured on your property. Review current offers today.
Thinking about releasing equity from your home? Compare top lenders and understand your rights and obligations before making a decision.
Thinking about releasing equity from your home? Review top lenders and learn about your rights and obligations before making a decision.
You may be able to secure larger loans and enjoy better interest rates by using your home’s equity. Review current offers today.
Home equity release may provide the financial support you’ve been needing. Learn how to tap into the equity tied up in your home without having to move.
If you’re a property owner looking to get a loan, a secured loan could be a wise option. Leverage better rates by using your home as security.
HSBC’s equity release is designed to help homeowners unlock the wealth tied up in their property. Whether you’re looking to support family members, HSBC provides a secure solution with no need to sell your home. Their specialist advisors can walk you through the process with confidence.