Symptom Chart

WARNING: This page is about a different car, the 2009 Ford Pickup, 2009 Ford F550 Super Duty, 2009 Ford F450 Super Duty, and 2009 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
No boost/low boost/lack of power	Restriction upstream of the turbocharger compressor	REMOVE the restriction.
	Turbocharger compressor air intake hose collapsed	REPAIR or INSTALL a new hose as required.
	Damaged charge air cooler (CAC)	REPAIR or INSTALL a new CAC. REFER to INTAKE AIR DISTRIBUTION AND FILTERING article. TEST the system for normal operation.
	Partially blocked CAC (engine oil).	REPAIR or INSTALL a new CAC. REFER to INTAKE AIR DISTRIBUTION AND FILTERING article. TEST the system for normal operation.
	Turbocharger compressor manifold hoses leaking	TIGHTEN the hose clamps.
	Loose connections or damage to air intake hoses and tubes	TIGHTEN the hose clamps. INSPECT for damage and REPAIR as necessary.
	Turbocharger turbine or compressor wheel damage	INSTALL a new turbocharger. REFER to Turbocharger - Body Off or Turbocharger - Body On . TEST the system for normal operation.
	Turbocharger bearings seized	INSTALL a new turbocharger. REFER to Turbocharger - Body Off or Turbocharger - Body On . TEST the system for normal operation.
	Exhaust leak between manifold and turbine housing	REPAIR as required.
	Low compression	REPAIR as required.
	Stuck high-pressure turbine vane or turbocharger actuator assembly	Key Off, MOVE the turbocharger actuator assembly linkage through its full range of motion. CHECK for sticking or binding. REPAIR as necessary.
	Turbocharger actuator linkage dislodged from high-pressure turbo actuator arm	Visually INSPECT the turbocharger actuator linkage to variable geometry turbocharger (VGT) arm. REPAIR as necessary.
	Restricted flow through the EGR coolers due to coolant intrusion	REMOVE the EGR cooler outlet temperature sensor and INSPECT for signs of coolant. If coolant is present, REMOVE the vertical cooler from the horizontal cooler and INSPECT for signs of coolant. If coolant is present, REMOVE the horizontal cooler and pressure test. REFER to ENGINE EMISSION CONTROL article. INSPECT for blockage or coolant intrusion. REPAIR as necessary.
Excessive oil consumption (blue or gray exhaust smoke)	Incorrect type or grade of oil	DRAIN and FILL with specified oil.
	Extended oil change intervals	CHANGE oil as recommended.
	Clogged air cleaner element	INSTALL a new air cleaner element. REFER to INTAKE AIR DISTRIBUTION AND FILTERING article. TEST the system for normal operation.
	Restriction upstream of the turbocharger compressor	REMOVE the restriction.
	Turbocharger oil seals leaking	REFER to Turbocharger Internal Oil Leak Test .
	Restricted breather system	INSPECT the breather system. REPAIR as necessary.
Noise or vibration	Loose connections or damage to air intake hoses and tubes	TIGHTEN hose clamps. INSPECT for damage and REPAIR as necessary.
	Air leaks at intake manifold or CAC	REPAIR as required.
	Leaks at turbocharger inlet and outlet connections	REPAIR as required.
	Exhaust leaks at turbocharger housing, exhaust manifolds, turbocharger inlet pipes	INSPECT for leaks. Leaks can usually be detected audibly or visually, by a discoloration caused by escaping hot exhaust gases. REPAIR as required.
	Turbine bearing failure	INSPECT the turbocharger. REFER to Component Tests .
	Turbocharger low-pressure/high-pressure seal Turbocharger crossover tube seals Turbocharger compressor housing seals CAC leaks at connections	REPAIR as required.
	Turbocharger actuator cooling malfunction (air in the system)	BLEED the air from the fuel and turbocharger cooling system. REFER to FUEL CHARGING AND CONTROLS - FUEL AND TURBOCHARGER COOLING SYSTEM article. TEST the system for normal operation.
High boost	Leak in exhaust system before DPF	REPAIR as required.
	Turbocharger actuator linkage dislodged from high-pressure turbo actuator arm	Visually INSPECT the turbocharger actuator linkage-to-VGT arm. REPAIR as necessary.
	Stuck high-pressure turbine vane or turbocharger actuator assembly	Key off, MOVE the turbocharger actuator assembly linkage through its full range of motion. CHECK for sticking or binding. REPAIR as necessary.