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Failure mode - Ford 7.3L Power Stroke (T444E)
Water pump wear
Reliability tier: verified - verify before ordering, see /disclosure/
Symptoms
- coolant weep at the weep hole / front cover
- bearing growl from the front; wobble at the fan
- slow coolant loss with no other symptoms
Root cause
Conventional wear item on a 20-30-year-old fleet; neglected coolant accelerates the seal. Found early it's routine; run dry it takes the belt and head gasket health with it.
Diagnosis
- UV-dye or clean-and-observe the weep hole
- feel for pulley play at services
Fixes
replace the water pump; refresh the coolant and inspect hoses while open ()
- water-pump (part category - specific model not chosen)
- coolant (part category - specific model not chosen)
Prevalence
common
Affected configurations (50)
- 1994 Ford F-250 (OBS)
- 1994 Ford F-350 (OBS)
- 1995 Ford E-350 Econoline
- 1995 Ford E-450 Super Duty
- 1995 Ford F-250 (OBS)
- 1995 Ford F-350 (OBS)
- 1996 Ford E-350 Econoline
- 1996 Ford E-450 Super Duty
- 1996 Ford F-250 (OBS)
- 1996 Ford F-350 (OBS)
- 1997 Ford E-350 Econoline
- 1997 Ford E-450 Super Duty
- 1997 Ford F-250 (OBS)
- 1997 Ford F-350 (OBS)
- 1998 Ford E-350 Econoline
- 1998 Ford E-450 Super Duty
- 1999 Ford E-350 Econoline
- 1999 Ford E-450 Super Duty
- 1999 Ford F-250 Super Duty
- 1999 Ford F-350 Super Duty
- 1999 Ford F-450 Super Duty Chassis Cab
- 1999 Ford F-550 Super Duty Chassis Cab
- 2000 Ford E-350 Econoline
- 2000 Ford E-450 Super Duty
- 2000 Ford Excursion
- 2000 Ford F-250 Super Duty
- 2000 Ford F-350 Super Duty
- 2000 Ford F-450 Super Duty Chassis Cab
- 2000 Ford F-550 Super Duty Chassis Cab
- 2001 Ford E-350 Econoline
- 2001 Ford E-450 Super Duty
- 2001 Ford Excursion
- 2001 Ford F-250 Super Duty
- 2001 Ford F-350 Super Duty
- 2001 Ford F-450 Super Duty Chassis Cab
- 2001 Ford F-550 Super Duty Chassis Cab
- 2002 Ford E-350 Econoline
- 2002 Ford E-450 Super Duty
- 2002 Ford Excursion
- 2002 Ford F-250 Super Duty
- 2002 Ford F-350 Super Duty
- 2002 Ford F-450 Super Duty Chassis Cab
- 2002 Ford F-550 Super Duty Chassis Cab
- 2003 Ford E-350 Econoline
- 2003 Ford E-450 Super Duty
- 2003 Ford Excursion
- 2003 Ford F-250 Super Duty
- 2003 Ford F-350 Super Duty
- 2003 Ford F-450 Super Duty Chassis Cab
- 2003 Ford F-550 Super Duty Chassis Cab