Thread: Odd problem filling/bleeding My D2 coolant

Blockage??
Could be in the hose from the header tank or kinked at the junction to the water pump pipe when you lift the tank to bleed?? was the bleed screw completely removed or was little bleed channel in the screw clear?

Originally Posted by Lemo

Blockage??
Could be in the hose from the header tank or kinked at the junction to the water pump pipe?? was the bleed screw completely removed or was little bleed channel in the screw clear?

I replaced ALL the bottom hoses So they are all brand New and I had the bleed screw completely removed.
The blockage has to be either in the pump or the motor itself, Once I give it a good blow through the coolant flows normally which is what seems weird.

Recently had the bleed screw section of my top hose give way and the vulcanised section of the inner hose ended up getting stuck in the thermostat.
So after that I removed all the hoses and back flushed all the cooling system with some filter material on the out let section of each gallery and found the pieces of the hose got flushed out.

I did find a thin strip of blue coloured silastic/sealant on top of the thermostat, Not enough to cause a major blockage though.

This overheating issue has got me Stumped so I will be booking the poor old girl into the Landrover hospital (Whyatt's Geraldton) for open heart surgery on Tuesday as today is a public holiday in WA.
I will have to send the truck into town via a flattop because I doubt very much that she will make the 30-40k run without destroying the motor completely.
I think that Whyatt's themselves operate an RAC flattop so that would work in perfectly, Am I correct in thinking this?

Hi Trout115,
Did you have the cabin air set to heating when you were trying to bleed the coolant?
If not, do you think that circulation through the climate control heater-core being "Off" might have impeded the bleeding and filling process?

Originally Posted by AndrewMilne

Hi Trout115,
Did you have the cabin air set to heating when you were trying to bleed the coolant?
If not, do you think that circulation through the climate control heater-core being "Off" might have impeded the bleeding and filling process?

The heater core has constant coolant flow and no valves for control.
Hot or cold settings don't affect bleeding.
The heating & cooling is all controlled by air doors/flaps.

Has the thermostat been checked/replaced/fitted around the wrong way?

Originally Posted by strangy

The heater core has constant coolant flow and no valves for control.
Hot or cold settings don't affect bleeding.
The heating & cooling is all controlled by air doors/flaps.

Has the thermostat been checked/replaced/fitted around the wrong way?

I am aware that the heater is constantly supplied But I ran the heater anyway, Just in case.
I renewed the thermostat 18-24 months ago and the boiling water from the kettle trick opened it up so I think that it is OK, I even tried locking the thermostat open with a couple of tech screws which is pretty much the same as removing it and the engine still overheated.
Yes I did have the thermostat fitted correctly as well.

The engine has done just under 250,000 K's So I am pretty confident that there is a good chance the problem lies with the gaskets on the head/heads or maybe even something more sinister (hopefully Not) and getting it into Whyatt's is my best option to resolve this problem.

As I have pretty much buggered the thermostat with the tech screws that will have to be replaced and a new water pump and set of new top hoses fitted may also be a good idea as well.
I have got about $3,000 set aside for this So I hope that will cover getting this fixed as I have No intention of getting rid of her.