F 450 2WD Super Duty V10-6.8L VIN V (2005)
Thermostat Bypass Hose: All Technical Service Bulletins
Cooling - MIL ON/DTC P1285/P1299/High Gauge Reading
TSB 06-21-15
10/30/06
MIL ON - DTC P1285 / P1299 - 5.4L 3V / 6.8L 3V -
FALSE OVERHEAT
FORD:
2005-2007 F-53 Motorhome Chassis, F-Super Duty
ISSUE
Some 2005-2007 F-Super Duty and F-53 Motorhome chassis vehicles equipped with a 5.4L or 6.8L 3-valve engine may exhibit an engine temperature
gauge indicating an overheating condition with the malfunction indicator lamp (MIL) on with diagnostic trouble codes (DTCs) P1285 and P1299.
ACTION
Performing normal engine cooling system diagnostics in Workshop Manual, Section 303-03, if it is determined that the engine is not physically
overheating (coolant expulsion) install a new thermostat and crossover pipe. They have been revised for improved cooling system flow characteristics.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
OPERATION
DESCRIPTION
TIME
062115A
2005-2007 F-Super Duty
2.8 Hrs.
5.4L 3V: Replace The
Crossover Pipe, And
Thermostat, Includes Time
To Check Diagnostic
Trouble Codes (Do Not
Use With 6051A, 6007A,
12650D, 10346A, 9280A,
9424A, 9600A, 9601A,
9926A)
062115A
2005-2007 F-Super Duty
2.3 Hrs.
6.8L 3V: Replace The
Crossover Pipe, And
Thermostat, Includes Time
To Check Diagnostic
Trouble Codes (Do Not
Use With 6051A, 6007A,
12650D, 10346A, 9280A,
9424A, 9600A, 9601A,
9926A)
DEALER CODING
CONDITION
BASIC PART NO.
CODE
8575
42