Heater - Corsa SXi 1.2 2005 model

[neutral 3]

Hi all, great little cars, but the heater in a friends SXi is only blowing cold.
Not yet tried changing the thermostat, but in previous cars, it has never made any difference.
Anyone know if the heater controls are cable or rheostat operated ?
Thanks.

[neutral 3]

Hi Winky, thanks for your reply.
The drivers footwell has been wet for ages, but we think that is a leak from the bulkhead ( we tried sealing this ) and not the heater matrix.
How are the heater controls operated ?
Cable or electrically ?

If it does need a new heater radiator, what is involved to change it ?

[neutral 3]

Thanks Winky.

It seems that the head gasket is leaking and that engine oil is getting into the cooling system, as the header tank is oily and the car is using oil.
I suspect that the oil has got into the heater radiator and gummed it up!
The car does seem to take too long to warm up.

[neutral 3]

Quick update, fitted a new thermostat and it now gets up to temp and the electric cooling fan cuts in as it should. However, the ruddy heater still blows cold! The feed hose to the heater is lovely and hot ( along with all of the other hoses ) but the heater outlet hose to the cyl head is barely warm.
Guessing the heater radiator is blocked ??