Bleeding Water - C20XE Overheating

[ST-eater]

wen car is running does water circulate the whole system ? can tell by removing header tank cap and see if any water is coming back thruw the thin top water pipe and into the tank?

I get water and occasional bubbles through the small pipe. Not sure if its pumping through all the time though

[gaznovalet]

no gm thermostats dont have bleed screw just the aftermarket ones do, bubbles are sure sign of air in the system, wen you rev the engine or squeeze bottom water pipe the water shud flow back into header tank via the return pipe on top constantly, just out of curiosity wot level is the water to in your header tank and wen its been running if you remove header tank cap is it pressurised?

[gaznovalet]

also you can bypass the heater matrix by simply joining the two water pipes together wich run into it to see if this is at fault.

[ST-eater]

Just tried it, it flows a fair bit when the car is revved etc.
The car gets hot and still no fan or heat from heaters :S

[ST-eater]

Only tried running te car with the water in the header and the cap off... so im not sure i it does pressurise or not...

[ST-eater]

can you swap the heater matrix pipes around? as the one on the left (the awkward one out of the two) has two kinks in the pipe, and i would like to rule this out as being a problem... although it still seems like the thermostat is being the problem... cant see why as its a brand new one from halfrauds

[gaznovalet]

yes you can swap the 2 pipes around as it dont matter wich way the water goes in or out the matrix. worth a try if you see kinks present as they certainly wont be helping.

[Benn]

I have a gm hosing and it does have the bleed screw.

Let the car warm up, take the cap off every so offen till all the air comes out. Then top all if/when needed. Only way i've ever done it.

[ad4m]

ive been told that the fan wont cut into until the cap is screwed on water gets hotter under temprature and XE are self bleeding

[ant_tay]

i knid of have this problem i have a digi dash and mine goes up 1 bluse section and 2 yellow and if it goes up to 3 yellow bits the fan kicks in but i also get only cold out of the middle vents