I posted a few weeks back about my 98 escorts heating packing up, as suggested onhere it turned out to be the thermostat that was stuck open. I fitted a new one and whilst i was at it flushed all radiator and heater matrix out. The heating now works properly apart from one thing. When the engine is started from cold, after about 10 minutes there is a strange musty smell emitted from the blower, it only lasts for a short time and isn't particularly unpleasant but I would like to know what it could be.
Anyone?