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P1277 Diagnostic Trouble Code Discussion for September 2009

Accelerator Pedal Position Sensor 1 Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P1277
Help Request Posted
1999 Ford F-250 Super Duty Lariat 7.3L Misfire, MIL Lamp on VIN: 1FTNX21FOX
P1277: Cylinder 7 - High To Low Side Open Detected. help please!vehicle came in yesterday missing very badly.What is weird is if you shut it off and restart it runs smooth for maybe 20 seconds or sometimes 2 minutes and then it starts what sounds like misfiring badly and it will smooth out and run perfectly for...
September 04, 2009