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Old 01-16-2020, 01:45 PM   #10
biketopia
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Join Date: Jul 2015
Location: Warrenton VA
Posts: 1,008
Re: Low power on 2001 6.0

There's no need to change the o2's at 30k, or any mileage for that matter unless they are bad. When the truck loses power does the check engine light flash?
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