Thought i had this over heating sorted..

[Immortality]

Does it have LPG?

 

[Gazza2005au]

No lpg, i just got her up to rnning temps and shes blowing bubbles in the radiator coolant level is lightly surging and once i turned the car off the coolant spurted out like an over heat

Thermo fans didnt kick on either

Temp gauge stayed just under half

 

[Immortality]

Put your coke bottle back in, fill it about half way and just let it run and bubble for a bit, there might just be more air trapped in it. Sometimes it takes a few good revs to get the coolant flowing properly and force the air out to the radiator.

If you take a look at the coolant cross-over passage in the intake manifold you'll note that it's not at the end of the head but between 2 intake ports, that means that air trapped further forward in the head can get trapped.

 

[Gazza2005au]

The coke bottle is not sealing i have to keep topping it up as the coolant flows over the cap opening

I have video of the bubbles but no where to upload it on here

 

[Gazza2005au]

Got her up to just under half temp gave her 3 revs to around 3500rpm and she boiled over

Water is black too, the coke bottle blew out, fans only work if i start the car from a cold engine, if the engine is already warm and i start it the fans wont turn on at all

https://ibb.co/S3Y0Lm3

https://ibb.co/dWks6dw

https://ibb.co/1QwYccC

 

[Lex]

Got her up to just under half temp gave her 3 revs to around 3500rpm and she boiled over

Water is black too, the coke bottle blew out, fans only work if i start the car from a cold engine, if the engine is already warm and i start it the fans wont turn on at all

https://ibb.co/S3Y0Lm3

https://ibb.co/dWks6dw

https://ibb.co/1QwYccC

Wrap electrical tape round the top of the coke bottle. That will give it a better seal when screwing it into the radiator.

When was the last time new coolant was put in? That looked crap.

When putting in the new thermostat, did you test it first? New parts these days can be sh#t.

Turn on the a/c the thermo fans should kick in?
There could be trouble with the thermo fan relays? Maybe the temp sensor is cactus too?

 

[Gazza2005au]

Hey mate when i turn on the A/C the fans dont turn on

I willl order a new temp sensor now and i will grab some new fan relays

The coolant was just replaced on saturday

 

[Lex]

Hey mate when i turn on the A/C the fans dont turn on

I willl order a new temp sensor now and i will grab some new fan relays

The coolant was just replaced on saturday

Make sure you get the correct relays. Test the parts before replacing?

Has the waterpump ever been replaced? If its original, maybe impellors have corroded away?

The joys of motoring eh?

 

[Gazza2005au]

i will pick up a radiator test tomorrow to see if the head gasket is blown

i just ordered a temp sensor

 

[Gazza2005au]

Went to get a radiator test kit and the bloke just said i dont need a test kit i have a blown head gasket

So now im going to replace the head gaskets my car is a 99 Calais which is a LN3/L36

The head gaskets on ebay only go to 1998

Is the LN3/L36 the same gasket kit as a regular VT commodore?