READ AL FIRST 3 POSTS IF YOUR GOOD WITH MOTRS/COOLING SYSTEM, AND AIR LOCKS ETX

More experience than what i hAve will be necessary....

My 05 pursuit ( same as a cobalt 100% )
L61 engine

I replaced my tstat. And never got coolant to flow again.
Original tstat was shot, - took a long time to heat up in the am . So i replaced it. No flow, messed around for hours - no flow. Took it to the dealer, and they confirmed there was no coolant flow, but no air lock.
So i bought a oem tstat, tested it AND installed it along with a new waterpump. STILL no coolant flow.
I messed around for hours to burp any air locks with no luck.

So i went to another deale and explained how my coolant lines would blow up lik baloons, only top rad hose gets hot, bottom rad hose stays cold, no heat etc ( this been happeninf the WHOLE TIME )
They all agree irts my headgasket, so i replace it. Head shaved , cleaned, tested , the works. Put it all ogether . Along with new gaskest everywhere.

STILL NO COOLANT FLOW.

Im lost.... And i have taken my top rad hose off, i can push air AND coolant through the rad and motor. So there is no blocks, i can also push air / coolant through the heater core, NO BLOCKS.


What els can this be? I have taken every piece of tbis coolig system apart , checked it and replaced it
Im lost.....


Sorry for bad english... Iphone typping / 10.... + 8 beers dont help anything

This post was edited by IB0T on Nov 14 2013 08:24pm

Only thing i can add thats differnet from before, is now my coolant lines are hard as rock. NOT baloons. There is a difference


Ive tried to bleed it every way me and 4 other guys can think of.... Wtf...

Coolant will continue to push out the overflow rtank when the cars running, when you shut it off, the coolant settles
Into the motor and i need to add more coolant

Witj regards to this post.
When surfe tank cap is off, coolant will push out for days
With cap on, coolant lines are like rocks
Before headgasket replave coolant lines were baloons with surge tank cap on

This post was edited by IB0T on Nov 14 2013 08:27pm

Wht els is left???.... A air locks that has kicked my ass for days.... Or......? HELP

you put the thermostat in backwards/upside down.

That or you've been doing a shitty job of bleeding the system of air bubbles.

This post was edited by SlyGoSu on Nov 15 2013 08:24am

Ive tried everythinf i can think of to bleed it.
Jack front end up, flat ground, jack surge tank side up, even put it on a nice hill i got in my yard with surge tank way up in rhe air
Tstat cannot go in backwards, i tried just to test, doesnt fit . and the new one is in there facing the same way the old one was


/the tstat is symmetrical so upside down is not possible either. Nothing thag makes one side different from tbe other....

This post was edited by IB0T on Nov 15 2013 08:50am

Run it with the tstat out and find out if that is your problem... this really doesnt make much sense

But j tested it...?
It opened in boiling water, and closed when i took it out. Looked normal to me

Ive gone to worst case senario and did the headgasket lol WTF


Im begnjng to think the first dealer didnt do shit
To test anything, i think i need a proper coolant flush with that machine to push the coolant around

This post was edited by IB0T on Nov 15 2013 08:57am

Flip the thermostat over and see what happens.

have u let the engine get up around 280ish so the tstat will pop open u have let it get a hot a couple times before it will function had to just replace the radiator and thermostat on the same engine. oh and are ur fans kicking on?