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Old 10-02-2010, 01:20 PM   #2 (permalink)
A madman
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Join Date: Mar 2008
Location: WV
Posts: 1,018

Pequod - '17 Subaru Outback
90 day: 22.79 mpg (US)
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I've got the PO420 code myself. I just keep clearing it with the scangauge, although you can use some anti-foulers for spark plugs and move the sensor out of the air stream, and a lot of people say that will fix it as well. It's just not worth fixing properly with the price of a genuine catalytic converter (the only thing guaranteed to work)

As for wire resistance, I'm not sure. I do know I broke a wire on my samurai one time and I just soldered it back together, and it actually ran better with that rigging job.
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