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Re: 91 Cressida: bad spark plug=rich?
Posted to Emissions Forum on 12/22/2003 4 Replies

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If you go from Nitrogen to a mix of 1% Hydrogen and 99% Nitrogen, the sensor will switch from low to high. IF you go back to 100% Nitrogen, it will switch to low. Is this working? If it is working, th... Login to read more.

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