2g Thermostat /water pump /pressure issue?

[eclipsyo]

My issue: So I start up the car today and let it sit at idle for 25+ mins or so. I can feel the top rad hose temp increasing as well as the rad itself. So I check my logger, and my coolant temp is now around 195-200. The first observation is the main fan hasn't turn on yet, and for 2 the bottom hose going to the rad is kinda pressure less and very cool. The car coolant temp on the logger didnt get above 205 or so but I'm not sure if things are working properly?

So after this occurred I turned the car off and waited a little. Once it was cool enough, still (very hot) but i was able to take off the cap with a rag, a little spilled out .... but I could see a bit of 'steam' and the level was to the top of the cap opening. So I squeezed the lower hose and after a few times maybe 5-10 times the level fell about halfway in the top hose. I proceed to start the car with the cap off.. (thinking I would see the thremostat engage) but the coolant just started to rise and really didnt look to move at all. Again the bottom hose was cool still, the fan was on, and the top pipe was very hot... I had to quickly cap the cap before it spilled out.

With all that said... does any of this yield something bad or good?!?!

Note, I have a g2, This was from a pure cold startup (first time for the day) and only idle level for about 20-25mins..... I have the stock 13psi cap, stock thremostat, and hoses. but have the upgraded PWR radiator. The coolant is 50/50 with like 3 bottles of water wetter in it.

Not sure if i truly have a problem being its my thermostat, a pressure problem, or my water pump, or really all of them together.. any advice or testing specifics are greatly appreciated!

Or do I NOT have a problem, now I'm thinking it was flowing properly? I figured since the fan finally kicked on, the temp reached over 200, and the lower hose was very cool and the upper was lightly steaming, the valve cover was too hot to touch. Maybe this is normal idling temp and the rise in upper hosing was due to the themostat pushing hot coolant out to the radiator? Does the system flow up and out to rad or does it suck from top hose and down the bottom hose to the radiator?

Again it just seemed very hot for idling...

Thanks in Advance!

 

[eclipsyo]

OK... can anyone just explain the basic way our DSM cooling system flows...

Does it flow out of the top of the thermostat down the upper pipe into the radiator then through the radiator back up the lower pipe into the engine internal (many other places i'm sure like the throttle body) then back through the thermostat.

Correct? Could I get someone to confirm this ###. Thanks.

 

[mccurdy]

i would love for someone to answer this too, as my car just over heated. My thermostat hose that leads to the radiator bottom is friggin ice cold and my top hose that runs to the top of my radiator is liquid lava hot.

I had what appears to be a leak from the small L rubber hose that runs from the thermostat housing to behind the turbo.

My car is over heating like a mofo so i left it at a 76 gas station auto center. The guy thinks its a bad thermostat or something which is causing it to shoot excess pressure thru the small hose (that cracked) causing the crack.

He said this just at first glance though, so i dunno. If i had some background knowledge on how our systems work for 2G's, i would be able to call bullshit on him if it came down to that.

 

[luv2rallye]

OK... can anyone just explain the basic way our DSM cooling system flows...

Does it flow out of the top of the thermostat down the upper pipe into the radiator then through the radiator back up the lower pipe into the engine internal (many other places i'm sure like the throttle body) then back through the thermostat.

Correct? Could I get someone to confirm this ###. Thanks.

Yep. Just like almost every other car on the planet.