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Thread: What are some things that could cause my truck to not go into open loop?

  1. #21
    Joe (Moderator) joecar's Avatar
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    ok, I'll look at your new logs shortly...

  2. #22
    Joe (Moderator) joecar's Avatar
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    I see in your log that WO2LAM1 goes rich during WOT...

    but I don't understand what EQIVRATIO is doing...!? And I see AFR matching/following EQIVRATIO.

  3. #23
    Joe (Moderator) joecar's Avatar
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    Set B3643, 44, 45 to these values respectively: 1.00, 0.006250, 0.006250.

  4. #24
    Member sixltrbtr's Avatar
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    Quote Originally Posted by joecar View Post
    I see in your log that WO2LAM1 goes rich during WOT...

    but I don't understand what EQIVRATIO is doing...!? And I see AFR matching/following EQIVRATIO.
    Yeah, although I don't really understand what that pid is I was expecting it to do something different with the added fuel. Is it like the pcm's desired lambda or something?

    Set B3643, 44, 45 to these values respectively: 1.00, 0.006250, 0.006250.
    Okay, I will

  5. #25
    Member sixltrbtr's Avatar
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    Set B3643, 44, 45 to these values respectively: 1.00, 0.006250, 0.006250.
    Ahh yes, I had messed with those. I will re-do the log now.

  6. #26
    Member sixltrbtr's Avatar
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    Does this look better? Still heard a little knock and looks like a lot more fuel than before. Maybe a little too rich in some places.
    Attached Files Attached Files

  7. #27
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    Zero all values in {B5908} Fuel Mixture Spark Correction.

  8. #28
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by statesman View Post
    Zero all values in {B5908} Fuel Mixture Spark Correction.
    I don't remember if B5908 adds or subtracts from sparkadv.

  9. #29
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by sixltrbtr View Post
    Does this look better? Still heard a little knock and looks like a lot more fuel than before. Maybe a little too rich in some places.
    Looks much better...

    where it's too rich: you can now edit B3618 PE table to reduce some of that fueling.
    where it knocks: bring B3618 up a little (try EQR 1.175).

  10. #30
    Member sixltrbtr's Avatar
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    Thanks joecar! I will mess with it some more on Monday. After driving the truck around a little bit I can say that it already feels much better and seems to run stronger. I'm looking forward to tweaking the PE fueling to get it dialed in. I have noticed that it likes to knock while the truck is downshifting from a cruise. It feels like it's sruggeling to downshift quick enough or something. I'm wondering if adjusting it to downshift a little earlier would help some of that.

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