[tom3]

This tube sprays the liquid refrg. into the evaporator so it's located very close to this core which is inside the firewall. Should see a connection in the small AC pipe right near the hvac box at the firewall, unscrew the compression nut and pull the pipes apart, very carefully pull out the tube/screen and note how it's oriented. It doesn't look like it goes back in the way it does, so check it when you take the old one out. Put a new o-ring on the fitting if you can.