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How many miles or cycles have you put on the engine since cleaning? Some computers require you to put x amoutn of miles and start and stop cycles before clearing the check engine light. My 1997 pick up, it would take like 50 miles and a day or two of regular driving before it would go off. I hope it clears for you..............

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Q: 2002 F150 check engine soon stays on says egr dirty you changed egr and cleaned pipe still on?
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