[Bulk] Re: [V6-12v] no heat at idle .

[Tom Christiansen]

Clive,

>An intersting not however. If I am idling and the car runs up to about 95C
>with heating on full blast blows cold- luke warm. On the highway with the
>engine cooler at about 80C ( last night it was cold out , about -10C ) The
>heat is just belting out ! so it tells me I have a problem with rate of
>delivery of coolant to the core,

So you've identified the problem. Now go do something about it!!! ;-) Your 
reasoning sounds very dead on. From what I know, the flow rate can be 
reduced if the pump can't deliver the pressure, it isn't bled, or if 
there's a restriction in the system. Since you changed the pump recently 
and bled the system, I'd vote for the restriction in the heater core or 
associated hoses. It should be possible to flush the thing out with the 
heater core mounted in the car.

Tom