2005 Cobalt Thermostat Nightmare!!! - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 17 (permalink) Old 01-07-2014, 08:37 AM Thread Starter
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2005 Cobalt Thermostat Nightmare!!!

I just got done replacing my thermostat on my Cobalt. Let me first say that I am a pretty fair backyard mechanic. I also have a lift. It took me about 10 minutes to pull it and about 5 hours to put it back in!! I could not find the right .000295 degree angle for that fu^%$#* water pipe from the water pump to the thermostat housing to go in after replaceing the thermostat. I tried from above to below for hours! Using prybars, screw drivers channel locks and the like. If anybody has a tip on the installation please share it here for the next guy so he does not have to go through what I did. I was seriously thinking of dropping the motor thats how frustrated I got!!!
Now after I have completed the task and not set fire to the car due to frustration are there tips ? Maybe loosining the thermostat housing from the block? Everything is so hard to get at I still am not sure what I could do to make it easier!!! Lastly why the fu%$ would you put a part that probably will need to be replaced sometime in the cars life behind the exhaust manifold?

Last edited by charlie77; 01-07-2014 at 12:19 PM.
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post #2 of 17 (permalink) Old 01-07-2014, 09:12 AM
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First time I've heard that somebody found it hard to change the thermostat on a Cobalt.

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post #3 of 17 (permalink) Old 01-07-2014, 09:15 AM
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Its 2 bolts to replace the thermostat....

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post #4 of 17 (permalink) Old 01-07-2014, 09:17 AM
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It should not be that difficult to change out a thermostat. The reason why they don't last forever is that engineers design them to get service at a dealership. They have not perfected a better part and just like the internally combustible engine, has not changed in over 100 years.

I cannot see why you would set the car on fire from frustration. If you are unable to do it, then I would highly suggest to find a friend to help you install a new one. That's what I would do.

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post #5 of 17 (permalink) Old 01-07-2014, 12:07 PM Thread Starter
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2005 Cobalt

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Its 2 bolts to replace the thermostat....
you never had a hell of a time getting the tubing back on that goes to the water pump? Mine would not slide any where near enough to leave it hanging. I know its two bolts for the thermostat but the tube is next to impossible to get back in. I find it almost impossible that no one else had a terrible time with this.
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post #6 of 17 (permalink) Old 01-07-2014, 12:38 PM
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I have never replaced one on my cobalt yet, I have replaced/upgraded to a nismo thermostat on my old 240 back in 1999, took me about an hour and flushed the radiator while I was at it.

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post #7 of 17 (permalink) Old 01-07-2014, 12:50 PM
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Quote:
Originally Posted by charlie77 View Post
you never had a hell of a time getting the tubing back on that goes to the water pump? Mine would not slide any where near enough to leave it hanging. I know its two bolts for the thermostat but the tube is next to impossible to get back in. I find it almost impossible that no one else had a terrible time with this.
You dont need to remove the water pipe...

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post #8 of 17 (permalink) Old 01-07-2014, 01:02 PM
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Quote:
Originally Posted by BankerBalt View Post
You dont need to remove the water pipe...
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post #9 of 17 (permalink) Old 01-07-2014, 01:13 PM
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Sucks you had trouble with that. I replaced mine in less than ten minutes, one of the easiest things I've done on the balt.
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post #10 of 17 (permalink) Old 01-07-2014, 02:27 PM
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Did mine when I did my water pump. The gasket was completely gone for the thermostat. Never was able to find it

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