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Old 06-17-2003, 11:59 AM
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neato5oh
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1992 F250 Failed Emissions - high NOX

Failed on the dyno driving cycle not idle.

It's SD.

I will check those codes - good idea.

The other thing is, the lady was driving it like granny-low was 1st gear (which it is, but it's obviously not used in everyday situations) - so the rpm's were way higher than they would be in typical driving siutations.