RE: TOY: heater not heating up?

[Roger Brown <rogerb@xxxxxxxxxxxxxxxxxx>]

> The cable, with blue colored housing, that connects to my water valve is not
> connected to my hot/cold selector lever.  Although I haven't tracked it down
> the blue housing cable terminates somewhere in the dash.  And the hot/cold
> lever connects to another valve (I'm assuming) under the glove box.  And
> when I turn it to cold the air is indeed cold so every thing works ok there.
> 
> After further investigation last night I'm pretty sure the heater core is
> clogged because the inlet coolant hose is hot to the touch and the outlet
> hose is lukewarm.  I will try to take a garden hose to the two different
> hoses to see if it unclogs.  If not I guess I will tear into the dash and
> excavate the core.

There is probably a connection from the recirc/fresh air lever that controls
the routing of the air.  The hot/cold should control the coolant valve.  Try
opening it manually and see if you get any hot air.

>   > Are you getting any gurgling sound with the valve open 
>   > when you rev the
>   > engine?  If so, you might have air in the cooling system or 
>   > worse yet a
>   > leaking head gasket or cracked head (I had this very problem).
> 
> Although there are no gurgling sounds I do suspect I have a blown head
> gasket also.  I am waiting till I decide to rebuild the whole engine.

Best not to wait too long or water in the cylinders may cause too much damage
to the cylinder walls, push the block beyond the rebuild limits.