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P1299 Diagnostic Trouble Code Discussion for July 2010

Vacuum Leak Present With IAC Valve Fully Seated


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Trouble Ticket Help Requests for DTC P1299
Help Request Posted
2003 Ford E-350 5.4L limp in mode VIN: 1FTSS34L73
P1299: cyl head temp. Hello all. We were faked out at first, engine did not actually run hot for us, but we replaced the thermostat, found the fan clutch not pulling and replaced it, while changing the t stat lots of chunks out of the cooling system so we replaced the radiator. Aft...
July 11, 2010
2003 Ford F-250 Super Duty XL 5.4L Stall VIN: 3FTNX21L23
P1299: Engine protection activated. Engine shuts off randomaly. Dash gauge reads max hot but actual coolant is 190. Cylinder head temp reads 191 at same time. Engine temp is normal but looking at the scope the ect spiked to 272 and then back down to 190. Dash gauge remained normal. With the cht ...
July 11, 2010
2003 Ford E-350 5.4L limp in mode VIN: 1FTSS34L73
P1299: cyl head temp. Hello all. We were faked out at first, engine did not actually run hot for us, but we replaced the thermostat, found the fan clutch not pulling and replaced it, while changing the t stat lots of chunks out of the cooling system so we replaced the radiator. Aft...
July 12, 2010
2003 Ford E-350 5.4L limp in mode VIN: 1FTSS34L73
P1299: cyl head temp. Hello all. We were faked out at first, engine did not actually run hot for us, but we replaced the thermostat, found the fan clutch not pulling and replaced it, while changing the t stat lots of chunks out of the cooling system so we replaced the radiator. Aft...
July 11, 2010
2003 Ford F-250 Super Duty XL 5.4L Stall VIN: 3FTNX21L23
P1299: Engine protection activated. Engine shuts off randomaly. Dash gauge reads max hot but actual coolant is 190. Cylinder head temp reads 191 at same time. Engine temp is normal but looking at the scope the ect spiked to 272 and then back down to 190. Dash gauge remained normal. With the cht ...
July 11, 2010
2003 Ford E-350 5.4L limp in mode VIN: 1FTSS34L73
P1299: cyl head temp. Hello all. We were faked out at first, engine did not actually run hot for us, but we replaced the thermostat, found the fan clutch not pulling and replaced it, while changing the t stat lots of chunks out of the cooling system so we replaced the radiator. Aft...
July 12, 2010