my 2006 f250 with a 6.0 diesel would only idle had no throttle what I found was the map sensor was shorted and causing the 5 volts needed to operate it and other sensors the clue was that when I scanned for codes it showed I had 12 codes! I am attaching the wiring diagram which help me understand the 5 volts needed for the sensors. good luck any questions you can email or call me.
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