2010 1.6L L4 DOHC 16-valve Ecotec underheating problem

deerkiller

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Hi, folks. I'm new here - not an owner (I wrench Subarus) - but asking on behalf of an old friend who's being hassled by this thing.

The problem is that the engine temp won't come up. Seems like a simple enough bug (thermostat stuck open), but he had it into one of the big chain shops (not my preference) and they replaced it. A couple of months later, problem back - and it's been seriously cold here, so it's a nontrivial problem.

First, this is a "Vancouver Olympics Special Edition", in case that matters. Second, he claims that they claim that getting at the thermostat requires a major effort (i.e. unbolting a lot of in-the-way stuff from the engine, then lifting it), making this an expensive proposition in terms of shop time.

So is this a known problem? Is there anything weird about this engine that could make anything other than the thermostat cause it? Is there a preferred thermostat make? And how accessible is the thermostat housing, really?

Thanks much.
 

deerkiller

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I don't know - are you suggesting it needs topping up and/or burping?

And that video sure doesn't make it look like there's any T+T (Trouble and Trick) to doing this. Even though the draining looks like a PITA, the whole job should be less than half an hour - with none of the reported dismantling. Fyi, the work was done at Canadian Tire, which is a great retailer but has a terrible reputation for repairs.
 

zora

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After a few months it should not need burping but depending on outside air temperatures if the the coolant is low you wont get heat but the engine temperature gauge may not indicate it is overheating.
 
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