have had major problems with the heating on the golf, and some1 told me it could be the valve that goes into the heater matrix from under the engine, so i had a diy day on it
so 1st thing was to undo t he 3 clips and take the pipes off
this is what has the problem, the vlave inside is stuck shut
so the tools i need is a flat head screw driver, some WD40 and my fav tool......an hammer
then what i needed to do was spray some WD40 down the valver end, as you can see it goes in but not out
then with the screw driver and hammer bang the valver to open it again
with a few good bangs it released the valve, now when i spray WD40 through it, it comes out the other side
now i needed to put it back on, but as i took it off, water come out the main pipe, so i have made an air blockage, so i need to run the car and as water starts to come through the pipe, put the pipe back onto the valve
now i needed to put water and anti freeze back into the car as i lost alot of water taking it out
and to make sure i got all the air out the system, i ran the car with out the water cap on, look at the pretty bubbles
and well...............problem fixed, nice near instant warm air