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Cooling Fan Running After Turning Car Off?

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Cooling Fan Running After Turning Car Off?

Old 07-13-2019, 04:29 PM
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Cooling Fan Running After Turning Car Off?

I have a 2008 SS with 90k miles. I drove it for a while today in sunny, 87 degree weather. Temp on dash was normal and I even scrolled thru gauges one time like always. Temp of coolant was 205 which is what mine always has run. When I got home, I put her in the garage and turned her off. I got out to do a couple of things in the garage and heard a fan running. I walked around to see what it was. It was the cooling fan on the HHR. It stayed on for about 2-3 minutes I would say before it cut off. Is that normal? I didn't remember hearing it do that before but just about every other time, I just go straight in the house.

So, is that normal? Do any of your HHR SSs do that too?
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Old 07-13-2019, 05:26 PM
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Yes, normal. Donbrew(I think?) has posted the parameters before, can't recall what they are.
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Old 07-13-2019, 06:20 PM
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X2. Normal but I'll bet that it was over 205 when you turned it off. Like RJ, I can't remember the parameters for the temp to allow the fan to continue to run after shutdown. (something like 216 comes to mind but I could be wrong on that.
My fan has never run after shutdown but my operating temps are always around 187-189. Sometimes a little more if I let it idle a long time before shutdown.
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Old 07-13-2019, 06:35 PM
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Yeah it did idle for a good bit when I first got home so we could move some cars around and put the HHR in the back of the garage. Then it was a slow crawl into the garage to park it. So I didn't look at the coolant temp at shutdown but I would say it could well have been over 205. Next time though, I will look at it upon shutdown.
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Old 07-13-2019, 08:31 PM
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The magic number is 284F! You have a problem.
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Old 07-13-2019, 08:40 PM
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Mine runs after shutdown, rarely. I've never been over 220 or so. There were other parameters, wish I could remember.
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Old 07-13-2019, 08:54 PM
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There is another place where it seems to say 230F. The entire section seems to have been copied from a different car though, lots of discrepancies.
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Old 07-14-2019, 08:25 AM
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Welcome to the site, a 2008 , have you ever changed the Dexcool, changed the thermostat?
if so , which thermostat did you use?
it might be time to drain the coolant.
Someone , changed to a better radiator.
Age of the coolant is key, after it gets overheated , it crystallizes
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Old 07-14-2019, 10:42 AM
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Originally Posted by RJ_RS_SS_350 View Post
Mine runs after shutdown, rarely. I've never been over 220 or so. There were other parameters, wish I could remember.
I've shut mine off when hot and never heard the fan run with the key out of the ignition switch.
2010 SS 60K on the clock.
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Old 07-14-2019, 10:46 AM
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Originally Posted by Oldblue View Post
Age of the coolant is key, after it gets overheated , it crystallizes
Please show proof of this statement.
Thanks.
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