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mass airflow sensor

  1. B

    PCV valve and Mass air flow sensor

    I have a 2013 explorer XLT I bought used. I have not had the best gas mileage and today I noticed a fluctuating idle. I went by my mechanic and we decided to quickly check the mass airflow sensor. He found oil on the air filter and when he looked at the PCB valve,. It was nonexistent. We...
    • bbqwolfe
    • Thread
    • excessive oil mass airflow sensor pcv valve
    • Replies: 7
    • Forum: Under the Hood
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