Hi, my mk6 heater will only blow warm air even after a long run with the control knob at max temp, however, if I turn it down to the min cold setting it blows cold air through which would suggest the control knob is doing its job, the hose on the right going to the heater matrix gets hot but the one on the left only gets warm, the bottom radiator hose doe's not heat up either, I have squeezed all the hoses until I have arms like Popey but still no heat.
Both thermostat and pump were replaced about nine months ago. Sorry its a bit long winded of me.
Thanks in advance, Joe