2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

Help. Thermostat removal

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Old 03-24-2018, 05:27 AM
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Help. Thermostat removal

I need help on how to remove the coolant thermostat on a
2009 Chevy cobalt 2.0 LNF.
Its over heating. And it’s killing me.
Old 03-24-2018, 05:53 AM
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Have you checked to make sure the fans are runnijng I've only seen the thermostat get stuck open which will keep t he car cold
Old 03-24-2018, 05:56 AM
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Yes. The fans are running.
I checked the oil, it's not milky
Fans work

The only thing is my water pump
Or thermostat.
I checked my heater and it's blowing cold air.
Old 03-24-2018, 08:02 AM
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How hot is it running?
Old 03-24-2018, 08:15 AM
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Hottest from the first time spiked 285.
Normal for me is 200
Fans work and all.
Oil not milky.
I removed it just now and the inner o riding is damaged like it ate it up and is on the inner part of the o ring.
Attached Thumbnails photo54.jpg   photo417.jpg  
Old 03-24-2018, 08:44 AM
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Please keep us posted how the new one works
Old 03-24-2018, 08:49 AM
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Will do. For now, I have no replacement but I'll do a test run to see if it's that. After I burp the system.

It's hot here so I was told I don't need no thermostat, but I'll get one still cause I want to be complete with my system
Old 03-24-2018, 12:16 PM
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That's pretty common on the base model to my experience I replaced it like 3 times in the 5 years I owned it in the lnf I haven't had to touch it. Was your a.c. working? Mine wouldn't would just throw air
Old 03-24-2018, 05:59 PM
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My ac was pretty cold
Old 03-24-2018, 06:45 PM
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Originally Posted by NickStarr
Hottest from the first time spiked 285.
Normal for me is 200
Fans work and all.
Oil not milky.
I removed it just now and the inner o riding is damaged like it ate it up and is on the inner part of the o ring.
That's the fisrt thing to fail. I have had 2 OEM units fail in a year and my second stuck mostly shut. If my engine ever goes over 225 something is wrong.
Old 03-24-2018, 06:48 PM
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It's still going high temps.
Ima get a service on coolant flush.
As well as oil change.
I have a new reservoir coming in, but it might take a few weeks.
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