Car Sounds
Catalytic Converters
Nissan Trucks and SUVs
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Could the catalytic converter on a 92 Nissan pickup be the cause of a loud rattling noise while idling?


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Wiki User
2011-09-12 15:21:09
2011-09-12 15:21:09

yes it can the ceramic inside of it may have been damaged somehow. usually by having a accident from what i have heard. but my Lincoln does the same thing. its not going to be a major problem as long as you can bear the noise.


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Could be the heat shield on the catalytic converter May be a bad bearing in one of the belt driven accesories i.e. Water pump Alternator Belt tensioner Idler pulley etc.

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Could be an exhaust leak close to the engine or a bad catalytic converter. It also could be a bad mass airflow sensor.

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Yes, "sparkling plugs" is definitely detrimental to idling or smooth running of an engine

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I experienced poor acceleration in my '95 Chevy blazer, which eventually became so severe that when accelerating, the engine nearly stalled.It turned out that my catalytic converter was disintegrating, and choking off the exhaust so severely that the backpressure was causing engine retardation. I took the vehicle to a muffler shop, where they performed a backpressure test on the exhaust to diagnose the problem. After replacing the catalytic converter, the problem was corrected.

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