I'm writing from Italy, we have not official assistance by Ford. I have a 2004 F150 5.4 Supercrew lariat with electronic automatic temperature control. Wen I switch on the system blower doesn't work. No air. The compressor work because if I drive in highway at 70-80 mph, the air pressure in the front of veichle push the air inside the cabin and the temperature go down, otherwise if there isn't the speed, no air in the cabin. I've checked fuse13 that is ok and fuse116 that is ok. Is the relay R06 in the a/c blower chain? I don't ear "tic" noise from that. Where is located the blower motor to check it? Is accessibile from front panel, behind the a/c control panel? Is difficult to unmount? Thank you for your help. Giuseppe