Ford Crown Victoria owners have reported 2 problems related to catalytic convertor (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Ford Crown Victoria based on all problems reported for the Crown Victoria.
It gets too hot because of catalic converter right under driver seat. Lack of proper insulation.
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all problems of the 1996 Ford Crown Victoria
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Catalytic converter has failed several times.