Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - CEL, limp mode, and mileage
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Old 10-12-2018, 12:20 PM   #4
Byron King
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Could be either, but with the age on our cars it can't hurt to start there. If it's ever been replaced and it isn't a Ford brand O2 it's probably bad. What are your fuel trims doing while driving?

I asked why you thought these cars had limp mode, I figured your car was running bad.
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crazy how something so simple can be over looked and cause so much trouble
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