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  1. 2

    Chasing a rough idle?

    Found this online I can pickup tomorrow. Looks like it has the o2 adapter. If this won’t work I’ll have to order off Amazon
  2. 2

    Chasing a rough idle?

    Also I noticed earlier when revving it to the 1100-1600rpm range to check misfires. I was getting some popping sounds from the exhaust, backfiring.
  3. 2

    Chasing a rough idle?

    I’d have to go buy a gauge to test it. I can try and get one tomorrow
  4. 2

    Chasing a rough idle?

    Honestly no idea. It could have been replaced or could be oe. I have no records on it sadly
  5. 2

    Chasing a rough idle?

    It was still running a little rough but was a little better but it was also idling at 675-715rpms at that time. Once it settled down to the 575-615rpm area it started sputtering again worse. I checked misfires again and at idle there’s no misfires even with it running rough. But once you hit...
  6. 2

    Chasing a rough idle?

    Yeah I reset the o2s before but I didn’t reset when I unplugged them
  7. 2

    Chasing a rough idle?

    Yeah I unplugged 4 of them I believe. Might have been 3 but definitely 2 pre cat were unplugged
  8. 2

    Chasing a rough idle?

    Yeah I had 6 fault codes pop up for that
  9. 2

    Chasing a rough idle?

    They were stuck at 0 until it warmed up a bit. Then they started bouncing around again
  10. 2

    Chasing a rough idle?

    Looks like I can only show loop status or hot open loop.
  11. 2

    Chasing a rough idle?

    Those are both at idle. But that’s what it’s jumping between value wise. I can probably get the values with closed loop and possibly rpm at the same time. I’ll also grab the maf and idle
  12. 2

    Chasing a rough idle?

    So it’s running the exact same with o2 sensors unplugged. This is the long term and short term trim values at idle with them unplugged
  13. 2

    Chasing a rough idle?

    The other thing I did and forgot to list was I unplugged the maf sensor while running and it ran the same. No change in idle whatsoever.
  14. 2

    Chasing a rough idle?

    I did also go through all the injectors in my scanner and they all open and close. Started running rougher when I closed them. I’ll try and see if I can reset both and unplug o2 and see what happens and what readings I get. So from the readings I mentioned it does look like it’s removing fuel...
  15. 2

    Chasing a rough idle?

    Yeah it’s at 11.480. Intake leaks shouldn’t be any. I definitely have exhaust manifold leaks. No broken bolts though. Just very rusted. I did a fuel trim reset through the scanner I have
  16. 2

    Chasing a rough idle?

    It doesn’t misfire on idle, but misfires on all cylinders when it revs to 1200-1600rpm
  17. 2

    Chasing a rough idle?

    I have not. How would I go about that one?
  18. 2

    Chasing a rough idle?

    Ok so my 2009 Tahoe 5.3 has been running a bit rough/choppy. It has had codes previously but have since not come back. Small and large evap leak, and misfire codes. Problem is it’s idling at about 575-600. When it idles over 600 it runs nice. When it drops into the 500s is when it runs rough but...

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