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Re: P0420, cat failure & rear O2 Re: 05 Focus
Posted to Technical Theory Forum on 4/26/2006 2 Replies

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Besides, if the CAT cooled down you would be seeing just the opposite - poorer oxidation means more combustibles means staying high. Beginning switching after 30 seconds would mean the CAT is suddenly... Login to read more.

2 Replies Received (View Replies)