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it's a shame the pump housing is integral part of the engine so you can't really check it. the return of the radiator seems to have the thermostat.
i guess you could check the top hose of the radiator for any flow with running engine @ idle, but make sure you don't get a pink shower...


We did ...

So... Allowed the car to sit while I gathered my thoughts... Consulted the below diagram, had the idea to fill the header tank, pop off the pipe below, have a friend start the car for a short period of time, so I could both monitor the pipe and fill the header as needed. Flow from the pipe, which ...

iichel wrote: Mon Aug 12, 2024 5:22 pm I'm putting my money on a failed water pump, but I'm just a guy behind a keyboard.

I have a very strong hunch that guy behind a keyboard could be right
Thanks for your interactions, very much appreciated - it kinda validates some of the logic we have been using.

the secondary pump is only for the egr cooler and not the main circuit


I did have that hunch, but I thought at 20 quid and a quick fit, wouldn't be a bad shout since I've changed about everything else :D
Another possibility would be a pesky airlock, but, from experience I've never had one so ...

water pump still working? sounds like something is not flowing (no drive, clogged)?


Water pump is my fear - not the best job on them, the previous mechanic is absolutely adamant it's pumping, but, I fear it may be on its way. I'm going to replace the secondary pump since it's a very cheap part ...

did you read for error codes and check the measured values of all temperature sensors?


Yes, no errors showing up, and had it out for a drive with live diagnostics. Main temperature took a short while to get up to critical where it would cut throttle, about 120+ degrees. Radiator outlet was ...

Just wondering if I can get some advice on the CFWA 1.2 TDI (Match and petrol not an option!) 2012/61 6R.

After 10min of driving the temperature light flashes on and power dies, also heaters give up. Check under bonnet and coolant level is up, top rad hose is rock hard and stone cold, but the ...