DIY一族图文并茂：自己怎么换温控阀

hardywang · Oct 1st, 2005, 16:18

本文以GM 3800引擎为例子，其他车型灵活运用。

WARNING!!!!!! To be performed on a COLD engine ONLY!

hardywang · Oct 1st, 2005, 16:18

1.) Open up your hood and remove the engine cover.

http://macgp.clubgp.com/howto/engine/tstat/t-stat1.jpg

hardywang · Oct 1st, 2005, 16:19

2.) This is what it should look like with no engine cover

http://macgp.clubgp.com/howto/engine/tstat/t-stat2.jpg

hardywang · Oct 1st, 2005, 16:19

3.) Here is a close up of where the t-stat is located

http://macgp.clubgp.com/howto/engine/tstat/t-stat3.jpg

hardywang · Oct 1st, 2005, 16:19

4.) Use a 10mm socket and remove the two bolts holding in the t-stat housing. On the 'left' bolt, you will just need to remove a wiring harness attatched to the bolt by pulling it off lightly.

http://macgp.clubgp.com/howto/engine/tstat/t-stat4.jpg

hardywang · Oct 1st, 2005, 16:20

5.) Once you have removed the two 10mm bolts, the t-stat housing is now free and you can move it to the side to access the thermostat. Becareful, about 1/4 cup of coolant pours out during this process.

http://macgp.clubgp.com/howto/engine/tstat/t-stat5.jpg

hardywang · Oct 1st, 2005, 16:20

6.) Either by hand, or with a pair of pliers, gently pull out the thermostat. It may require a little bit of pressure to 'pop' it out of the housing.

http://macgp.clubgp.com/howto/engine/tstat/t-stat6.jpg

hardywang · Oct 1st, 2005, 16:21

7.) New Thermostat on left. Old thermostat on right. If you notice on the old t-stat, there's a black round rubber o-ring on it. You will need to remove that and place it onto the new t-stat.

http://macgp.clubgp.com/howto/engine/tstat/t-stat7.jpg

hardywang · Oct 1st, 2005, 16:21

8.) T-stat & o-ring close up

http://macgp.clubgp.com/howto/engine/tstat/t-stat8.jpg

hardywang · Oct 1st, 2005, 16:21

9.) O-ring close up

http://macgp.clubgp.com/howto/engine/tstat/t-stat9.jpg

hardywang · Oct 1st, 2005, 16:22

10.) New t-stat on left with original o-ring on it

http://macgp.clubgp.com/howto/engine/tstat/t-stat10.jpg

hardywang · Oct 1st, 2005, 16:22

11.) Place the new t-stat with the o-ring on it back into the t-stat housing.

http://macgp.clubgp.com/howto/engine/tstat/t-stat11.jpg

hardywang · Oct 1st, 2005, 16:22

12.) Place the radiator hose back on to the t-stat, and reverse the procedures to bolt the t-stat back into place.

http://macgp.clubgp.com/howto/engine/tstat/t-stat13.jpg

hardywang · Oct 1st, 2005, 16:23

13.) Now...run the engine for about 15 minutes to warm it up to proper temperature. Take a peice of towel, and a flat head screwdriver and bleed the air out of the system. To do this, on top of the radiator hose at the t-stat, you'll see a little brass valve. Place the towel over it, and then slightly turn the valve counter clockwise with the screwdriver. When only coolant is coming out, you can then close the valve again. Make sure to have the towel there so that the coolant doesn't shoot up at you!! Also, don't forget to top off the coolant.

llx · Oct 1st, 2005, 21:52

thank you so much for posting these usefull process, good job man, I gained lots from your previous post of changing break pads, keep going to let us sharing your info. thanks again.

llx · Oct 1st, 2005, 21:59

two questions for you: how to find out if the thermostat is busted or just chang it anyway? to the last step (13), do you have any picture to show what the valve looks like? thanks.

hardywang · Oct 2nd, 2005, 08:14

引用:

作者: llx

two questions for you: how to find out if the thermostat is busted or just chang it anyway? to the last step (13), do you have any picture to show what the valve looks like? thanks.

我想温控阀也就是10块钱的零件费，觉得不对头换掉也不错。在我的车上，13步就是一个螺丝，拧松以后coolant会从这里流出来。

llx · Oct 2nd, 2005, 11:21

引用:

作者: hardywang

我想温控阀也就是10块钱的零件费，觉得不对头换掉也不错。在我的车上，13步就是一个螺丝，拧松以后coolant会从这里流出来。

any symptoms to show if the t-stat's bad or not? does it control the heater? cuz my car's heater is not warm enough in winter, if it fits for my situation, I will change my t-stat.

hardywang · Oct 2nd, 2005, 11:32

我感觉暖气不够热根heater core之类的有关系。t-stat应该控制引擎温度。你在冬天引擎温度正常么？

projects · Oct 2nd, 2005, 12:20

几个问题，
1.冷车时换。
2.应当先放掉部分coolant，而不是仁由其流出，coolant有甜味，对动物和小孩有吸引力和有毒。何况发动机烘干coolant的时候气味也是对人体有害的。Coolant是可以重复用的。
3.T-stat gasket或O-ring应当是要换的，除非厂商说是可以重复利用的，管道接口处需要清理干净，否则可能会漏。
4.看起来这辆车的t-stat是完好的，不过练练手也不错。

Oct 1st, 2005, 16:18	#1
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16	图文并茂：自己怎么换温控阀本文以GM 3800引擎为例子，其他车型灵活运用。 WARNING!!!!!! To be performed on a COLD engine ONLY!
	秘鲁游记突尼斯游记坦桑尼亚游记

Oct 1st, 2005, 21:52	只看该作者 #15
llx Senior Member 注册日期: Dec 2004 帖子: 7,686 声望: 3975990	thank you so much for posting these usefull process, good job man, I gained lots from your previous post of changing break pads, keep going to let us sharing your info. thanks again.
llx Senior Member 注册日期: Dec 2004 帖子: 7,686 声望: 3975990

Oct 1st, 2005, 21:59	只看该作者 #16
llx Senior Member 注册日期: Dec 2004 帖子: 7,686 声望: 3975990	two questions for you: how to find out if the thermostat is busted or just chang it anyway? to the last step (13), do you have any picture to show what the valve looks like? thanks.
llx Senior Member 注册日期: Dec 2004 帖子: 7,686 声望: 3975990

Oct 1st, 2005, 16:18	只看该作者 #2
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	1.) Open up your hood and remove the engine cover.

Oct 1st, 2005, 16:19	只看该作者 #3
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	2.) This is what it should look like with no engine cover

Oct 1st, 2005, 16:19	只看该作者 #4
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	3.) Here is a close up of where the t-stat is located

Oct 1st, 2005, 16:19	只看该作者 #5
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	4.) Use a 10mm socket and remove the two bolts holding in the t-stat housing. On the 'left' bolt, you will just need to remove a wiring harness attatched to the bolt by pulling it off lightly.

Oct 1st, 2005, 16:20	只看该作者 #6
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	5.) Once you have removed the two 10mm bolts, the t-stat housing is now free and you can move it to the side to access the thermostat. Becareful, about 1/4 cup of coolant pours out during this process.

Oct 1st, 2005, 16:20	只看该作者 #7
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	6.) Either by hand, or with a pair of pliers, gently pull out the thermostat. It may require a little bit of pressure to 'pop' it out of the housing.

Oct 1st, 2005, 16:21	只看该作者 #8
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	7.) New Thermostat on left. Old thermostat on right. If you notice on the old t-stat, there's a black round rubber o-ring on it. You will need to remove that and place it onto the new t-stat.

Oct 1st, 2005, 16:21	只看该作者 #9
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	8.) T-stat & o-ring close up

Oct 1st, 2005, 16:21	只看该作者 #10
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	9.) O-ring close up

Oct 1st, 2005, 16:22	只看该作者 #11
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	10.) New t-stat on left with original o-ring on it

Oct 1st, 2005, 16:22	只看该作者 #12
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	11.) Place the new t-stat with the o-ring on it back into the t-stat housing.

Oct 1st, 2005, 16:22	只看该作者 #13
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	12.) Place the radiator hose back on to the t-stat, and reverse the procedures to bolt the t-stat back into place.

Oct 1st, 2005, 16:23	只看该作者 #14
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	13.) Now...run the engine for about 15 minutes to warm it up to proper temperature. Take a peice of towel, and a flat head screwdriver and bleed the air out of the system. To do this, on top of the radiator hose at the t-stat, you'll see a little brass valve. Place the towel over it, and then slightly turn the valve counter clockwise with the screwdriver. When only coolant is coming out, you can then close the valve again. Make sure to have the towel there so that the coolant doesn't shoot up at you!! Also, don't forget to top off the coolant.

Oct 2nd, 2005, 11:32	只看该作者 #19
hardywang 在青麦地上跑着 / 雪和太阳的光芒注册日期: Jul 2004 住址: Kilimanjaro 帖子: 9,428 积分:24 精华:16 声望: 7498223	我感觉暖气不够热根heater core之类的有关系。t-stat应该控制引擎温度。你在冬天引擎温度正常么？

Oct 2nd, 2005, 12:20	只看该作者 #20
projects Senior Member 注册日期: Jan 2005 帖子: 644 精华:1 声望: 372637	几个问题， 1.冷车时换。 2.应当先放掉部分coolant，而不是仁由其流出，coolant有甜味，对动物和小孩有吸引力和有毒。何况发动机烘干coolant的时候气味也是对人体有害的。Coolant是可以重复用的。 3.T-stat gasket或O-ring应当是要换的，除非厂商说是可以重复利用的，管道接口处需要清理干净，否则可能会漏。 4.看起来这辆车的t-stat是完好的，不过练练手也不错。