306 D Turbo heater problems

[gazsa401]

I went through all the issues your having when trying to sort my first 306 changed thermostat/flushed system etc bleed it loads of times decided to fit a new heater matrix solved the issue straight away wished i did this before wasting time doing the other tests etc my guess is my old matrix was partialy blocked if you change yours you will see how thin the pipes etc are on it so do block easily.

Just want to add something more for advice really
I changed my radiator last year plus fitted a new cam belt water pump and thermostat
My heater worked great before I changed all those things but since then I just can't get the heater to blow hot (just luke warm)
So that's why I'm trying the heater resistor or would you still recommend the matrix as well thanks

sounds like you haven't bled the system properly mate

Oh ok I've had it where I've run pure water through and there's no air bubbles coming out and the waters very hot then put antifreeze in and ran until the antifreeze comes out the bleed screws again with no air bubbles
I've made a header tank like you've shown in the picture
So the coolant is higher than the bleed screws
Do you have to have both bleed screws open at the same time because that's how I've been doing it ?
Any further advice would be appreciated thanks