Catalytic Converters
Mufflers and Tailpipes
Fuel Filters
Buick Skylark

Why would a new catalytic converter be heating up in a 1989 Buick Skylark with new plugs and muffler?

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2005-01-15 10:02:21
2005-01-15 10:02:21

Catalytic converters run a couple hundred degrees hotter than anything else that has to do with the engine, or exhaust system. It is just the nature of their design that cause them to have a high temperature. Thats weird - catalytics usually warm up when they are active, meaning that they are working on cleaning the junk from the engine. So either you have a misadjusted - polluting engine - or the mufler is blocking some of the output and they are incresing the heat. Catalytic converters do tend to run hot by the way. On many cars there is also a feedback mechanism - via oxigen detectors which may be not working so the feedback to the engine is faulty and it is giving erroneous input to the engine management system.

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A faulty muffler will not cause this but a clogged catalytic converter will.

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