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check engine light

  1. General Technical Chat
    I have a 2015 Ford Focus hatchback se. my check engine light is on and my car won’t go in reverse (though does go forward). I have heard a concerning noise from my engine every now and then about a month or so before this check engine light came on. Sounds like the engine is straining. Working...
  2. New Members Check In!
    So my focus popped up 3 codes to be specific PO300- multiple cylinder misfire PO302- cylinder 2 misfire PO316- engine misfire on startup first 1000 rev I originally thought it was my spark plugs which helped but didn’t stop it. What do you guys think and do you think I have to take it in or can...
  3. DURATEC Performance (2003-2007)
    I have the PZEV 2.3L Duratec, and my check engine light is on. I had bought a cheapo cold air intake, and when I had the codes read all 3 of my O2 sensors were throwing a code. I just upgraded to the FSWerks Cool-Flo and reset everything by pulling the battery cables and what not and the light...
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