Quote:
Originally Posted by Johnny Mullet
If the exhaust rattles, the cat melted down and is throwing the code since it's not cleaning the exhaust like it's designed to. I removed my cat for performance reasons and simply tied my 02 sensor (downstream) to the frame and it keeps the light out.
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The major rattle/buzz is coming from an inner-tube style A-pipe that busted loose years ago (very common Honda flaw). I pulled the heat shields as well -- all they did was rattle.
Something else further back is rattling -- likely the muffler. The 3rd random clanking occurs at low RPM idle -- the source can't be ID'd. It's a loud metal-to-metal clank/squeak.
I used a data logger to check the pre- and post-cat O2 sensors and compared the output to an expected voltage chart (about a year ago). It all was well, yet the rattles haven't changed.
What's the average service life on the converters? The car won't pass inspection without one (which is coming up -- plus I wouldn't feel comfortable with the emissions factor)...
-Rick