E30 Zone

Hi all I got round to the task of putting coolant in my car today however it's heating up fine and waters getting warm but the heaters won't get warm unless I'm revving car. What could this be? Not bled correct or a sticky thermostat ?

Any suggestions appreciated.

Thanks Alan

Airlock, also known as a short cut to a cracked head.
Pull off the upper heater hose, let coolant flow from each side, then refit it.

Are the hoses on the right way round? Back of head to lower heater pipe, upper heater pipe return to pump/reservoir

i just had this issue sorted it eneded up being the S bend type pipe behind the engine b@stard to get to had to remove the manifold also the the thermostat housing had to be changed from a plastic to a metal one if that helps.

Okay ill check the pipes next time I'm up at car thanks guys.
Feel free to keep suggestions coming and ill let yous know how it goes

Cheers