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Old 09-22-2008, 02:14 AM   #1
mywaganiswhite
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Default Replaced Radiator...car is stilll overheating. Please help me :)

About three weeks ago my car started misfiring so I quickly got her into my garage and turned her off. I turned the car back on and the car stopped misfiring (it still has not misfired since). There was, however, a puddle of coolant where my car was and coolant continued to pour out of the bottom of my car. I could not tell where it was coming from because there was so much of it. I filled it back up and took it for a short drive and it overheated ( a lot). It continued to leak. It does not blow white smoke out the back and there was no coolant in my oil. We concluded that it was just a blown radiator. The shop that replaced my radiator 20k miles ago put the defective 2002 radiator on. And it was an automatic radiator. I hate them.

I replaced my radiator today with a mishimoto radiator. I installed it and filled it. I turned it on and got it hot. The temp guage sat just where it used to sit when my car ran fine. It seemed fine so I took it around my neighborhood. It started to heat up again after about two minutes. The temperature did not shoot up instantly like it did before but it was getting too hot for sure. It is no longer leaking.

Why is it overheating still? What could it be? I believe I burped the radiator fine but I am no expert on these things. I could not get any more fluid in but I may be doing something wrong there too. Any suggestions?
Thank you very much.

PS. Car has 120600 miles on it. It is driven super mellow on the streets and has seen one track day.
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Old 09-22-2008, 02:18 AM   #2
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I think your thermostat is stuck homie.



Hopefully, it isn't the H word.
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Old 09-22-2008, 02:21 AM   #3
Wrx_Fan_0717
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Also, when you burped it you sure you let the thermo open?

Also, did you leave the turbo reservoir cap off and let it run until you saw some bubbles or the coolant fall?
The whole process of refilling takes a couple days also. Mine dropped and needed to be refilled for 2 days after the rad install.
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Old 09-22-2008, 02:24 AM   #4
mywaganiswhite
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Can you kind of explain what that means? I mean, the temp guage heats up as the car heats up just as it should. It just goes too high. Could this have been my original problem and the reason that I was leaking everywhere or was that likely my radiator? Can I unstuck the thermostat or do I need a new one? Thanks youuu.
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Old 09-22-2008, 02:25 AM   #5
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I dont even think I know where the thermostat is. Where is it? Yes I did leave the cap off and let the bubbles fall.
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Old 09-22-2008, 02:34 AM   #6
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Bad news for ya, the thermo is on the bottom hose (where it goes to the block)....bottom right if you are looking at the car.

It is in a silver housing (what you connected the hose to) that you take off it is either two 8mm or two 10mm bolts holding it on. The thermo is visible once that is accomplished.

Be prepare to loose a lot of coolant. Also, i would get a new one they are pretty cheap, testing them is hit or miss. Get a new one.
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Old 09-22-2008, 02:43 AM   #7
mywaganiswhite
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haha darn it.

Is it possible that I have a headgasket problem? I ruled that out because of the lack of white smoke and the overheating.
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Old 09-22-2008, 11:12 AM   #8
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Its possible that you warped the heads when it overheated. I've tested a lot of thermostats (thermometer in hot water) and you'd be surprised how much difference there is between factory and aftermarket ones. Factory thermostats open much better and flow more coolant. I highly, highly, recommend a factory one. Replace it first and see if it helps. How's your coolant level now? If you warm the car up with the cap off, does it puke coolant? Thats a good indicator of blown h/g.
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Old 09-22-2008, 02:19 PM   #9
mywaganiswhite
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I do have a factory thermostat. I just let the car run with the cap open and coolant slowly started to overfill. Nothing drastic and it was not shooting out fast. Is this what you mean by puking?

Edit. Is it possible to have a blown headgasket but have no leaking and no white smoke coming out the back?
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Old 09-22-2008, 03:13 PM   #10
Wrx_Fan_0717
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Quote:
Originally Posted by mywaganiswhite View Post
I do have a factory thermostat. I just let the car run with the cap open and coolant slowly started to overfill. Nothing drastic and it was not shooting out fast. Is this what you mean by puking?

Edit. Is it possible to have a blown headgasket but have no leaking and no white smoke coming out the back?

Depending on where it is yes......possible.

But, your overheating and you have yet to change your T-Stat the car is running normal other than the heat issue. More than likely the T-stat is stuck. If your overheating after you cover all your corners then worry.

Start cheap

ie. 20 dolla thermo
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Old 09-22-2008, 03:17 PM   #11
mywaganiswhite
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thank you man. I am for sure going to have to change my thermostat. That seems to be the issue. I checked my oil again and still no water. The radiator seemed to fill super fast so it seems to me that the thermostat is not letting any coolant into the engine. I have to drain my coolant and pull the radiator to replace the thermostat correct?
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Old 09-22-2008, 03:19 PM   #12
Wrx_Fan_0717
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Quote:
Originally Posted by mywaganiswhite View Post
thank you man. I am for sure going to have to change my thermostat. That seems to be the issue. I checked my oil again and still no water. The radiator seemed to fill super fast so it seems to me that the thermostat is not letting any coolant into the engine. I have to drain my coolant and pull the radiator to replace the thermostat correct?
Yes sir funnel it into a few CLEAN gallon containers so you don't have to trash it.
Crap get expensive.....you just replaced it so it should be new.
Anthony
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Old 09-23-2008, 03:21 AM   #13
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Hey OP first off you never answered the question of how you burped the system (unless I missed it, please correct me). That would be something you make sure you do correctly before you change the thermostat.

People say it takes a long time to do, but when I had to change my turbo it took 20 minutes tops to burp. Look it up, it's not hard at all.
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Old 09-27-2008, 05:05 PM   #14
mywaganiswhite
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Thermostat ended up being stuck. Car runs now! Thank you everyone.
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Old 09-27-2008, 06:49 PM   #15
Wrx_Fan_0717
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Told ya man,
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