Hi, had problems with heater not working, had new thermostat then had new heater matrix. Everything fine for a few weeks but now heater gets colder as temp guage nears 100. Any ideas?
The heater on my car sometimes gets warm then goes cold. There is no airlock, the system has been flushed out & a new thermostat put in. The pipe leading into ecotec box gets very hot but comes out...