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P1299 Diagnostic Trouble Code Discussion for August 2011

Vacuum Leak Present With IAC Valve Fully Seated

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Trouble Ticket Help Requests for DTC P1299
Help Request Posted
2005 Ford E-250 Super Duty 5.4L MIL Lamp on VIN: 1FTSW21535
P1299: Cylinder head temp overheat. Hi all you Ford guys. I haven't ran in to this one before. Customer states that the when the ck eng lt comes on the truck will run with loss of power. According to Mitchell theory when this code appears and it's not fixed the truck will start cancelling inject...
August 19, 2011