Check engine light came on had the message read staates catalytic converter defective possibly due to engine misfire or running condition, large vacuum leak, or engine oil leakage into exhaust -value guide seals, piston rings. In the morning when I turn truck on first thing it makes a ticking sound once I begin driving ticking sound disappears I i stio within the first 10-15 miles after I drive off the oil pressure drops and a warning light comes on to check pil pressure. Once truck is warmed up it no longer does this. I have no clue what is going on. Truck runs great. Does anyone have any ideas or has anyone experienced this if so help please!
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Thursday, September 17th, 2009 AT 7:05 PM