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International Automotive Technicians Network
Re: 91 E250 5.0L Code44 Failed smog
Posted to Technical Discussion Forum on 3/7/2006 13 Replies

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Probably not....cat efficiency doesn't look too great with 0.25% O2 and 0.43% CO.

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Were they in the divirter valve, or in the bypass valve ... Login to read more.

13 Replies Received (View Replies)