Freelander 1 Air in cooling system and thermostat query

Hi

I have the coolant bubbling over out the expansion bottle at high revs over 60 mph on motorway , ok around town but guess not getting up to temperature, changed thermostat, expansion bottle cap, New coolant and tested jiggle valve to make sure not stuck. Still bubbling over with no real signs of hgf, is there anything else I should look at or just assume its now the hgf, which I had done 6 mths ago! I have to continually bleed the system.

Also a quick question on the thermostat which checked worked before I put in, as far as I understand and have tested its the water at the bottom of the thermostat that opens the valve, from the pipe connected to the bottom of the rad? Is this correct as no colder water will get into the system as the water through the rad never gets hot enough to open the thermostat unless stationary for a while.

Also is there a correct way round to put the thermostat as the top two pipes from the thermostat just connect to each other, it seems an obvious way to fit it due to the pipes orientation but thought I would check

Thanks for any advise

Nick

The pipes do need to connect to the correct places, or the coolant can't flow where it's supposed to.

I've a diagram of the connections somewhere. I'll look it out.

Constant bubbles from the expansion tank do suggest a problem with HG, particularly if it's not been done correctly.

We need to know what engine and model year little fella?

Madmustang said:

We need to know what engine and model year little fella?

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Only the 1.8 K series has a remote PRT thermostat.

Nodge68 said:

Only the 1.8 K series has a remote PRT thermostat.

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I know nothing about petrol engines lol

Ok thanks for your help chaps

This is how the thermostat is installed, it seems in the logical positional but can you confirm, cheers

Nick

That looks right to me.