there is a synchronous motor attached to the switch via wires and controls a door that directs the airflow. it is usually near the fan motor. They cost about $50, maybe more.
Could be a locked up oil pump if you're fortunate. It sounds though like you've broken or seized a bearing or several.
Have a really good,honest mechanic take a look.
don-ohio
Electrical testing of the starter circuit an control circuit when it won't crank is the proper way to diagnose this type problem .Testing not guessing . Do you know what all is involved to make that start crank ? There is wiring , connectors , ignition switch , park neutral safety switch , starter relay , PCM - powertrain control etc.... When you turn the key to the start position battery + voltage is sent on circuit 50-BB16 A to pin 85 at the starter relay in the central junction box . If there isn't any problem with the anti-theft system the PCM will supply a ground to energize the starter relay. This will close the contacts inside the relay sending B+ voltage from fuse F1.8 30 amp in the battery junction box.to an through the transmission range sensor to the S terminal on the starter solenoid . There are no magical fixes for automotive electrical problems .
No Crank Diagnosis how to troubleshoot starting system problems All make an model vehicles are basicly the same , but viewing a wiring is essential . Could have moisture , corrosion etc... Your best bet , take it to a guy like in the video . If you were here where i am it would cost about $ 100.00 for 1 hour diagnostic time .
A glowing red manifold usually means a lean mixture, which causes a hotter burn, hence exhaust manifold glows red......you havent stated inlet or outlet so i went for the obvious...
Pull out the spark plugs their is probably oil or water in the well surrounding plugs. Cheap eaasy fix for water just dry it out. oil? Replace valve cover gasket .
Check engine light would have nothing to do with this ! Check engine light is for engine codes ! there is a problem with the radio it self ! or SJB - smart junction box , ford's BCM - body control module . You should take it to a qualified repair shop . or ford dealer !