I understand how it works. I have the part from Ford, should have got the parts location drawing from Ford parts while I was there (they are an hour away) It's sometimes up against the firewall. Followed all the AC tubing and lines, Its just not in site in the engine area, I Will remove the glove box and try to locate. Not sure I even want to mess with it if its hard to get to. Worth the 1.1 hours at Ford, includes evacuation and recharging. (+parts and 134) Have an excellent Ford dealer here. Was hoping to locate and repair myself. Friend has the A/C equipment to evacuate and I have my MACS license.
Thanks for everyone help.
Steve