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jack w
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1997 Ford F150 - what caused the catalytic converter to burn out?
this is a 4.2 engine - and it showed a misfire on number five cyl. the spark plugs and wires have been changed as the two front oxy sensors. The muffler shop said the catalytic converter needed to be changed - but was concerned what cause the problem in the first place ( the guy at the muffler shop said that they had been replaced before) I just got the pick up
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