hi
little /no heat coming out in car - M1 audi tt
I've taken off teh govebox, can see the flaps etc working properly in the air flow system.
temp gauge stays steady at 90 on the dash and also around there on the 49C climate control diagnostic
felt bot the pipes on the heater core - both are cold, so no warm / hot coolant is getting to the heater core
Is there some thermostat switch that may have failed that needs to be replaced or alternatively,how do I flush the core / bleed th coolant system to ensure not blocked? any help please