RAM 1500 Truck 4WD V8-4.7L (2008)
Catalytic Converter: Procedures
INSPECTION
ON VEHICLE
Look at the stainless steel body of the Catalytic Converter or Diesel Oxidation Catalyst (DOC)/ Diesel Particulate Filter (DPF) assembly, inspect for
bulging or other distortion that could be a result of overheating. Inspect for:
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Indiction of exhaust gas leakage such as soot trails.
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DOC/DPF pressure fittings and temperature sensor wiring for damage
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Joint misalignment
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Denting of greater then 6.3 mm (0.25 in.)
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Outer shell torn, cracked or otherwise damaged
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Loose or damaged core
OFF VEHICLE
With DOC/DPF of vehicle and separated, visually inspect DOC/DPF creamic faces (Inlet and Outlet) for indication of damage from:
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Fuel fouling
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Oil fouling
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Coolant fouling
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Shifted or move ceramic element
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Ceramic element appears to be plugged and the soot is wet
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More then 20 cells are damaged (broken through), showing soot on the outlet face of the filter.
A fluid soaked DOC/DPF element will have a glossy sheen and a strong fuel, coolant, or oil odor.
