Question about 1988 Ford F 150

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Code 42 ego always rich what is ego - 1988 Ford F 150

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Exhaust Gas Oxygen or otherwise known as the O2 sensor ford used this term up until 1994 when the federal regulations mandated industry standard terms and the implementation of the enhanced computer diagnostic system known as OBDII your O2 sensor is staying above .5v more than it should could be running rich,fouled plugs, plug wires excess fuel or a bad o2 sensor

Posted on Dec 07, 2012


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