Hey /o/ I am a poorfag and I need some fuckin help. I bought

>>16148912
Thermostat, to literally just thr radiator cap

>>16148935
Sorry I have no idea what you just tried to say.

>>16148912
Lolheadgaskets

>>16148974
Sad but true

>>16148945
It could be anything from the thermostat, to the radiator cap.

>>16148945

Not him but:

The thermostat might need changed or you just need to loosen the radiator cap a couple clicks (that's even if it's not a closed system)

>>16148999
>>16149000
checked

Do you think it could maybe be the water pump?

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>>16148974
subaru headgaskets are like cardboard by now. seriously a 99 is very old. time to replace them

>>16149061
The car has almost 300,000km on it.
There is no way the headgaskets haven't been done at least once.

Turn on the heat and run that shit full blast to assist with engine heat dissipation. It'll draw heat from the coolant into the heater core and you get to stay toasty. Doesn't fix the issue, but it'll help you in a pinch.

>>16149064
My '99 legacy had its original gaskets until I changed them out for some Aluminum ones at around 275,000 Miles

My guess it's the thermostat, though

>>16149137
I do that often but thanks.

>>16149152
Now I was wondering why you would say it's the thermostat.
I notice a definite increase in temperature when I rev the engine so why would I need to replace the thermostat?

>>16149305
Dear lord do you know nothing of cars? A thermostat is a valve which diverts coolant to the radiator. If it is stuck your car will over heat. Replace the thermostat, its cheap and a 10 minute job. If that doesn't fix your problem you're screwed.

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>>16149305
thermostat, noun.
>a device that automatically regulates temperature, or that activates a device when the temperature reaches a certain point.

Replace this thing.

>>16148912
>This happened when I let the car sit with just the radiator running and not the engine.
wut

>>16149305
Also make sure the fan behind your radiator is running.

>>16148912
Bye bye headgasket. Goona cost you $1500+ to fix man.

Do a compression test and report back.

>>16149443
I did mine myself for about $650

there's leaves blocking your fans

>>16149505
Are your headgaskets made out of solid gold?
or do you have a radial engine?

>>16148912
>>16148974
>>16149061

ITS TOTALLY FUCKED M8, RIGHT ERE'

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>>16149518
The gaskets themselves were about $80 for both, but I also replaced a lot of other stuff at the same time since they had to come off to do it anyway or were easy since the engine was out.

>radiator hoses
>thermostat housing heater hose
>ngk double platinum spark plugs and wires
>valve cover gaskets
>intake and exhaust manifold gaskets
>cam seals
>power steering pump rebuild kit and 1qt dexron iii
>a fuckton of brake cleaner
>1 gal. coolant
>rtv
>$120 charge for milling the heads
>5qt castrol gtx high mileage and Wix XP filter

All that and probably more that I'm forgetting since it was a while ago, and some cash I tossed my uncle's way for helping me. Shit adds up when you do an engine out service. Oh, it needs that, that's broken, shit this part broke taking it off, etc.

>>16149505
I think if OP doesn't know what a thermostat is, he probably should go to a mechanic.

>>16148912
Lift the front end and run the engine until its hot with the radiator cap off. Bubbles should come out. Fill the radiator. If that doesn't work change the thermostat. Look up how to do it it's easy. If that doesn't work get the cooling system conditioner from the subaru dealership it helps with small internal headgasket leaks.