Does any one know where the heat valve phyically locates, in the hood or inside the car? Much appreciated. Thanks

 

[assuming you're talking about the heater valve for the coolant and not the blend door for the air to the vents]

the valve is under the hood, a small bracket holds it to the firewall aft of the transmission. you can follow the 5/8" heater hose from the cylinder head (under the distributor) to the valve itself.

as a note, if you're planning to remove or replace it, it's important to get the cables adjusted properly on installation. a repair manual will explain the procedure much better than i could..