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p1233

  1. M

    hardstart with codes P0191 & P1233

    Hello All. I am a new member and have a problem 2004 Explorer giving codes P0191 & P1233. I have identifed what the codes mean, but not how to fix. I took it to a mechanic last week with no check engine light or known code, it has been "hard starting" and gradually getting worse. It was...
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