Hi again
I know the car heater thing has been covered on here before, but my question is this. Since I got my Z3 I've known it to have a problem with the cooling system and the heater. So I started by changing the water pump thermostat, viscous fan hub blade and belt plus back flushed the system till water ran clear. I also took radiator out and gave it a good flush through. All this sorted out the engine temp but the heater was still only Luke warm. I decided today to change control valve and I back flushed this part of system which judging by what flowed out was worth while as was changing the valve as that was clogged with brown sludge. so I now know the whole system is sorted and bled. My real question is this, why when I took the pipes off from the heater control valve did I not get so much as a drip of water come out? would this be the norm?.
I know the car heater thing has been covered on here before, but my question is this. Since I got my Z3 I've known it to have a problem with the cooling system and the heater. So I started by changing the water pump thermostat, viscous fan hub blade and belt plus back flushed the system till water ran clear. I also took radiator out and gave it a good flush through. All this sorted out the engine temp but the heater was still only Luke warm. I decided today to change control valve and I back flushed this part of system which judging by what flowed out was worth while as was changing the valve as that was clogged with brown sludge. so I now know the whole system is sorted and bled. My real question is this, why when I took the pipes off from the heater control valve did I not get so much as a drip of water come out? would this be the norm?.