Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - oxygen sensor graph review help. Cat dead?
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Old 02-03-2012, 03:53 PM   #17
Grinder
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Join Date: May 2011
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Location: Minneapolis, MN
What I Drive: 2003 CD silver SVT

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Quote:
Originally Posted by fast*st View Post
Yeah, P0420 showed up in 'pending' drat, maybe not letting it idle enough, usually start and go :) Suppose with a harness plug from the boneyard and the old O2 sensor plug part could make the resistor adapter, though willing to try and make it right.
Yeah if you can't tolerate the CEL I'd consider a cheater/emulator. The only cat failure that will affect performance is melting and that's a completely different scenario than inefficiency.
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