MK 2 running warm to hot on a run..

[Hammerhead]

Hi all,

Mrs Hammerheads MK2 1.8 seems to having issues with its cooling system currently. The car gets up to normal temperature and stays there for a while but will then run warm to hot (temp needle swings to the right) whilst out on the road. Turning the heater up to warm then brings the temp dial back to where it should be. It only seems to overheat when the heater is set to cool.

The car doesn't seem to be loosing coolant and it doesn't overheat whilst stationanary, both fans kicking in (UK car with a/c).

Any ideas with what might be wrong? It's only just been serviced by Mazda and this didn't happen prior to the service. Guess this could be coincidental though!

Cheers,

Steve

[Hammerhead]

No, no grid in front of the rad. Will have a feel of it tomorrow and see if it has any warm spots.

Thanks

[Hammerhead]

Fitted a new (gen Mazda) rad cap and it's still doing it albeit a bit less than before. Do you reckon it's worth flusing the original rad out or just getting a new one and being done with it?

Thanks again,

Steve