fuel trim

  1. B

    Of fan clutches and mileage

    I have read all I can find on fan clutches, and I am still a little stuck. Been doing a lot of deferred maintenance over the last year (TLDR is/was my elderly father's, but now I drive it). I noticed a precipitous drop in fuel mileage after changing out the water pump and fan clutch (severe...
    • bcja
    • Thread
    • exhaust manifold fan clutch fuel economy fuel trim oxygen sensor roaring noise severe duty vacuum leak
    • Replies: 63
    • Forum: General Discussions
  2. J

    O2 sensors heaters upstream fuse location

    where is the o2 sensor fuse I can’t find it. 2012 ram 1500 5.7L

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