So I had my car towed home the other night after my temps went up and coolant was overflowing out of my overflow. Following day I reflushed the coolant and went for some VERY hard drives for over an hr and couldn't replicate it (happily ) At first I thought it was my head gasket or tstat or a leak in my lines, but now that I can't get it to replicate I'm wondering what the heck it was.

Right before it happend I put the air on defrost no fan power and put the recirc on (I had a lot of hot air comming out of the vents and I was trying to not have so much air blow on me). This was the first time I ever did that.

Speaking with some experts the thought is there may have been a pocket in my system any other thoughts? Anyone else ever have this happen?

 

Pockets just don't happen in a normally operating cooling system. I cannot think of any plausible situation that would cause these symptoms other than a blown head gasket. I would do a compression check or pressure check your cooling system to eliminate that possibility.

 

I'm going to assume a boosted s2k w/ a blown head gasket wouldnt survive a "very" hard hour long drive without some obvious knocking going on

 

Bad water pump? Thermostat got stuck?

 

so i just went out to go to the supermarket and car overheated. This is about a 5mile drive not even. I pulled over let the car cool down drove it 1/2 way home and parked it. I will wait till the am and drive it back the rest of the way. The car was still warming up the oil temps just hit 180. I did try to put the air on hot full blast but there was no hot air comming out. I just don't understand how this happend on fri, then was fine on sunday and tonight it's screwed up again. I really hope it's not my head gasket, but since it was fine on sun it seems like the H.G. is fine. Perhaps the water pump or tstat is more likely.

 

https://www.s2ki.com/forums/index.ph...ic=666773&st=0 - seems like a ton of good info in this thread I do have the mishimoto rad