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The 2002 Jaguar X-TYPE is facing challenges with its catalytic converter that are impacting engine performance and reducing acceleration. The engine may experience various issues such as a spark plug coming loose, leading to engine problems, or a loose gasket that requires tightening. Overheating is a critical concern that could potentially result in car fires or even the vehicle exploding. Excessive oil consumption may necessitate prompt oil changes. It is recommended to replace the air filter every 15,000 to 30,000 miles and the coolant every 60,000 miles. Spark plugs should generally be replaced every 100,000 miles unless they are copper, in which case replacement is needed around every 30,000 miles.
Issues that may arise from a faulty catalytic converter in a 2002 Jaguar X-Type could include decreased acceleration power, emission of dark exhaust smoke, or detection of a sulfur-like odor coming from the exhaust system.