No starter operation - not working?

Get yourself a good starter Bech testing does not tell the condition under load. Before that make sure your Battery cables are good especially the ground to the block! Remove it clean it, if this doesn't help get the starter.

Flash Electronically Erasable Programmable Read Only Memory (EEPROM) is contained in an Integrated Circuit (IC) inside of Powertrain Control Module (PCM). The EEPROM contains the vehicle strategy and any calibration information specific to vehicle. The IC is reprogrammable and at times it may become necessary to reprogram or reflash the entire contents. This is usually due to an after production strategy change or the Flash Vehicle Identification (VID) Block has been previously reprogrammed and has reached its limit. The VID block can be tailored to accommodate various hardware changes made since vehicle production. This procedure can only be performed using Ford's Service Bay Technical System (SBTS) or equivalent.
A replacement PCM will have a label stating PROGRAMMING REQUIRED. This indicates that it is necessary to retrieve VID data from the original PCM before removing PCM from vehicle. This procedure can be performed using New Generation Star (007-00500) scan tool or equivalent. See FLASH VEHICLE IDENTIFICATION BLOCK PROCEDURE. If original PCM is damaged, nonfunctional or incapable of communicating, it will be necessary to manually reprogram VID block. This procedure can only be performed by contacting the "AS BUILT" data center for programming

Sounds like a parasitic load, go to site here under repair look up battery item 9 it will tell youhow to check for it. But if you have glove boxlight, trunk light and hood light those are the most likely culprits.

Are you sure it was cranking and didnt start? Sounds like it could have a bad starter motor.I wish I had something for you to tell them, intermittent problems like this are difficult to find sometimes, due to the fact that it doesnt always happen.

Do you have a theft system on your vehicle? Do you think the theft system might be causing a problem?

Have you done any testing at the starter relay in the battery junction box? Any testing, make sure the tranny is in neutral and the e-brake is set. The ground for the control side of the relay goes through the clutch switch then to the computer. I'm not sure if the computer actually grounds that circuit or monitors that circuit? Without a ground, the relay won't energize.

I can't talk to you about bypassing the relay, because of safety issues.

The terminal for the load side of the relay is hot all the time. You can unplug the relay, use a test lite, check for voltage. The voltage for the control side of the relay, goes hot when you turn the key to crank.

If the relay has a diagram on it, the load side the symbol may look like an open switch, for the control side of the relay, the symbol may look like a coil.

Have a helper turn the key to crank, can you hear or feel the relay click? I think you would still need to check voltage on the load side.

If the theft system is causing a problem, even if you get the starter to crank by testing. It won't start.