OK, well, this is a 1997 model. I believe yours is an earlier model? I did locate the orifice tube and it is in the line that leads from the condenser on the right side of the engine compartment radiator support. There is a spring-lok connector there and upon disconnecting the connector, I can see the orifice tube/valve in the tube.
Now, the trick is to get out out. It is well stuck in there. The manual says use a set of needle nose pliers to pull it out, but that was to no avail and it the top end ended-up breaking off. So, now I must go to the auto store and get a broken orifice valve removal tool and try again.