Originally Posted by
onehundred80
I think the valves control the coolant exit from the heater core not into it. Obviously if the flow is non existent then no heat will be felt.
The valves pulsate I hear and the the frequency of the pulsations control the flow of coolant and hence the heat. The two valves operate independently of one another and thus the so called zone heat controls, driver and passenger.
Frankly I would check to see if there is power to the solenoids as a first step.
Check fuse #15, in the under hood fuse panel.
Okay I now have heat, the valves were working fine. I had a blockage or air lock in the single hose coming from the valves. My friendly mechanic (one of my brothers best mates, very handy) fixed it for me, yeah. Now just the drivers heated seat to sort
Thanks for everyones advice, cheers