Coolant issues

[Wire]

Coolant keeps turning into a orangy rustic colour, Is my water pump corroding? or sumthing else, i have flushed radiater and block many a times but it doesnt seem to have any effect. any ideas?

 

[Harvs82]

Perhaps try reverse flushing the radiator, and also removing the thermostat, and lower radiator hose, and then push the end of the hose into the thermostat housing, and use a fair bit of water pressure, and stop flushing when all the brown water stops flowing from the lower radiator hose.

When the water stops flowing from the lower hose, join the lower hose back up. I would recommend using the genuine Holden coolant, and also to assist in maintaining the proper 50/50 concentration mix of coolant and water.

I pour the whole 5 litre bottle of concentrate into the radiator, and then top up thru the thermostat housing and radiator cap opening with water. Then put the thermostat back together, and rejoin the top radiator hose. Flush out the coolant reservoir bottle, and then tip another 500mL of concentrate and 500mL of water in there.

The cooling system in the ecotec supposedly holds 12 litres, so by doing the above method you will end up with the correct mix of 50% coolant and water, which should end up minimising corrosion, and also stop the discolouration that you are experiencing.

If you need any more info, just send us a PM.

Cheers

Harvs82

 

[hako]

Make sure you also flush water thru the heater as this can hold quite a bit of rusty sludge.

 

[Harvs82]

Make sure you also flush water thru the heater as this can hold quite a bit of rusty sludge.

Thanks for reminding me of that, make sure your heater controls are set to full heat...

 

[Wire]

Cheers for that im about to go do it so il let u know how it turns out.

 

[Immortality]

have you run just water in the car or a mix of water/coolant etc. apparently it's common for the transcooler in the radiator to slowly leak into the radiator. read

http://forums.justcommodores.com.au/showthread.php?t=35824

 

[hold-on]

could someone direct me to a link where there is a coolant flush how to or something. I would like to do it but do it properly

 

[Harvs82]

could someone direct me to a link where there is a coolant flush how to or something. I would like to do it but do it properly

Have a look in the how to section on the site. Alternately have a look at the second post in this thread that I made... if anything isn't clear just give us a yell.

 

[hold-on]

will have a look thanks