{GUIDE} vz overheating problems

[morphix]

No, its plain as day on the engine next to the power steering cap, how can you not see it?

Ah yeh i understand which one you mean.

 

[RiCeY]

ok remove that cap, good chance its knackered so have a new one handy.

Run engine, have heater set to full hot but fan off.

Top up with coolant till full then open bleed screw on radiator and leave open till coolant flows from it. Then close it up and keep topping up till bubbles stop coming out and the coolant forms a whirlpool. It may overflow as it heats up this is normal. Clamp off the hose that goes to the overflow or that will fill right up and overflow. Every now and then reopen the bleed screw and make sure theres no air in there.

 

[morphix]

ok remove that cap, good chance its knackered so have a new one handy.

I called past Holden yesterday and got a brand new cap as my current one was starting to break apart (rubber) and also read this to be a good starting point of overheating issues.

Top up with coolant till full then open bleed screw on radiator and leave open till coolant flows from it. Then close it up and keep topping up till bubbles stop coming out and the coolant forms a whirlpool. It may overflow as it heats up this is normal. Clamp off the hose that goes to the overflow or that will fill right up and overflow. Every now and then reopen the bleed screw and make sure theres no air in there.

So i top the coolant up via the point on the engine, how do i determine when its full? The coolant will form a whirlpool at this point on the engine?

I assume you mean the coolant reservoir? What would be best to clamp this hose off?

Sorry to keep asking questions, i just don't want to do it wrong and mess something up.

 

[RiCeY]

Yes fill at the metal spout where the black coolant cap goes on the engine, its full when you cant fit any more coolant in haha. Yes it will form a small whirlpool in the metal spout.

Fold it and chuck a clothes peg on there if you dont have anything else.

Better to ask than do it wrong.

 

[morphix]

Ok thanks.

Can you also confirm this is suitable coolant Nulon Long Life Coolant - Supercheap Auto Australia as i currently don't have any and haven't needed to top up the coolant since i got the car (it hasn't budged).

Some web searches are stating Red coolant? My car has had Green coolant in it the whole time (mechanic put it in) and even after the radiator was replaced.

I called SCA to confirm if that coolant is suitable to which she states "Yes, i guarantee it" but i want to be certain.

 

[RiCeY]

Should have the red stuff, genuine holden stuff is what I use in my own car.

 

[morphix]

Well i gave this a go on Saturday as it was bloody hot and i really needed to use the Air Con (plus a simple 2-5km drive the car was overheating).

Did as directed, but there was no hiss noise at all, but i kept filling the coolant up till full, making sure that the reservoir hose was clamped to not overfill.

Let the car run for a good 10-15 minutes before i drove it.

Took it for a 3 hour solid drive and it didn't overheat at all, it sat roughly 1-2mm over the 1/4 line, which was great.

Checked coolant level later on from reservoir and it was still all fine, just like before i did it.

 

[keygen]

thanx Mango12010 .

mine heated up like Torquative's did , but i found this thread b4 getting a new thermostat
mine drank a litre after opening that screw .

 

[morphix]

I'm just glad my overheating issues have stopped, as it is my transmission is pretty much stuffed but i need to drive to work so i still use it till it dies completely, i don't need any unexpected expenses (eg. water pump).

 

[vzdriver]

Gday guys please help! You seem to know what you are talking about and I have tried everything you have said. I have a 05 vz which started making a bubbling sound so I changed the radiator cap and with in a couple of days it overheated. Not knowing about the bleeding issue i got a little upset and bought a new thermostat radiator and water pump and installed them. while I was there gave the car a full service including new oils and coolants. The car is now running fine but at high load like having to go slow up a big hill the car will overheat but will idle for hours on end and sit on a freeway at 200klm and not miss a beat, the motor is still powerfull and running great but cant figure out this problem. Tonight I was trying to bleed it again and I noticed that the coolant smells funny dosnt have that sweet coolant smell. If anyone has any pointers please let me know as I am going insane.