Had a 2007 Ford Five Hundred with a 3.0L Duratech come in last week. *Symptoms.....Random Stall at idle & Engine cut-out with throttle input over 25%. *DTC's...... P060A-Internal Control Module Monitoring Processor Performance P2105-Throttle Actuator Control (TAC) System - Forced Engine Shutdown P2107-Throttle Actuator Control (TAC) Module Processor U0300-Internal Control Module Software Incompatibility PCM & Throttle Body have been replaced by a Ford Dealer the week before. QE1 pinpoint tests for P060A, P2105, U0300...... Are any DTCs present other than the following: P0600, P060A, P060B, P060C, P061B, P061C, P061D, P061F, P062C, P1674, P2104, P2105, P2106, P2110, or U0300? YES - DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions. DV pinpoint tests for P2107....... DV24 DTC P2107: CHECK FOR OTHER SELF-TEST DTCS Note: DTC P2107 may set when a failure mode effects management (FMEM) action is taken. If the FMEM DTC P2110 is present with other DTCs, diagnose the other DTCs before diagnosing the DTC P2110. Are any DTCs present other than P2107 and P2110? YES - DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions See: Computers and Control Systems > Diagnostic Trouble Code Tests and Associated Procedures > Diagnostic Trouble Code (DTC) Charts and Descriptions. As you can see Ford Pinpoint Tests leave A LOT to the imagination in certain situations! Both PT's say to disregard the code & diagnose the next DTC. Reading further into the DV24 PT has you check the wiring between the Throttle Body & PCM, Seems logical as the PCM & TB have been replaced. Checked the wiring very thoroughly, Load tested the TB Motor control circuits with a Halogen Bulb & they can definitely carry more than enough current! Decided to graph the TB motor circuit voltages, Everything looked OK. You'd think if I had a bad power/ground input to the PCM I would catch a glitch in the voltages.....Nothing. Checked the Alternator for bleeding AC voltage into the system....Nothing. Double checked the terminals at the PCM & TB with a magnifying glass....All Good. Re-Flashed the latest calibration into the PCM even though that had been done already.....Nothing, Pull hair out. I'm not one to get discouraged & irritated, But this car was testing me pretty good!.....Let it sit for a day while I caught up on making a paycheck for the week. Customer called a few times & I told the manager they can come get it & take it elsewhere if their in a hurry! Cleared my head & got back on it.....Used the oscilloscope portion of the Vantage Pro this time to monitor the TB Motor circuits. *Found a "Ghost" waveform while reviewing the WOT portion of the stored data right before the PCM cut voltage to the TB Motor. *Looked to be a Injector waveform, But Primary Coil control can look similar...... Unplugged the front 3 Injectors one at a time with no success. Unplugged #4 Coil.......SUCCESS!!!!! Installed a new Motorcraft Coil on #4 cylinder & test drove it for 17 miles with no symptoms or DTC's!