Recent content by Marbor

  1. Marbor

    Knock sensor code permanent code showing

    I just fixed a similar issue I had on my knock sensor B2. Turned out the pig tail wire was corroded. New tail and sensor while on there. Same issue traced wire to under the crank and had a cut in the wire try tracking the wire down.
  2. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Last and happy update. On this thread and a learning curb. After rebuilding bank 1 lifters with OEM still had the misfire on bank 1 all cylinders and FT were crazy -16–20% Went ahead and rebuilt bank 2 with OEM lifters and while at it replaced the oil pump with Melling 365 and green O ring...
  3. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Well had to dig in since I was pretty bored and all honey do list have been completed. Pulled the head and low and behold. May slap together with known good lifters. I have the original ones from bank one that were not an issue prior to rebuilding. Worst case I make till spring fingers crossed...
  4. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Hello this is my final post just when I thought I was starting to WIN. So long story short misfire on 7 was pretty much fixed rig was driving great no flashing CEL idle smooth and felt good still had the low oil pressure and seen a video on the tube similar situation and the guy changed oil...
  5. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Hello all it’s been awhile but still chasing the same issue, rig has been pretty much parked hogging up parking. Any how I’m still having the oil pump pressure issue but believe I somehow figured out the misfiring on cyl 7. So basic diag shows FT are in the -10 B1 and -8.8/-9 B2 then I get the...
  6. Marbor

    08 suburban LTZ 5.3 misfire at idle

    I’m more after the pump I think it’s a mfg defect.
  7. Marbor

    08 suburban LTZ 5.3 misfire at idle

    I agree and was thinking the same. I couldn’t get cy1 on the pic but there are no misfires on 1-2 at all I’m guessing to pull the OP and go from there
  8. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Thanks haven’t done the spark arc test yet may look unplug everything tomorrow and re tighten/verify all ignition components are sound. See pic now it has multi Misfires at 1st it was just 3-7 after restart it seems to be across the board.
  9. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Thanks, I just did 2qt and my driveway is at a 15 deg slope so left at a nose dive and no change in pressure. Parts were kit I found online don’t know the brand 1st mistake form what I’ve read after the fact. FYI I just reinstalled the old vlom and oil sending unit without the mini screen and...
  10. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Yes I did check the cam lobes while vlom was off with my boroscoped all look good doesn’t look like it’s getting eaten up, also pulled VC prior to vlom replace with engine running and verified all lifters are functional no dead ones and oil is clean no glitter. I’m guessing it’s probably...
  11. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Hey all Just wanted to update install new vlom and now no change but now I get more random misfires across all cylinders but cy7 still has the most. And oil pressure is hanging at about 10psi at O.T I did just run it on the highway for a good 40 miles and she drove great no misses but once I...
  12. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Just wanted to update the group and see if I’m on the right path. So with vlom plugged in I get the cy 7 misfire and can see them counting on my top don scanner. When I set the rpm to 1k no misfires drove around then block a few time no misfire during acceleration when at a stop I get misfire...
  13. Marbor

    08 suburban LTZ 5.3 misfire at idle

    Just did some spraying around the intake ports and any plugs connecting to it nothing noticeable.
  14. Marbor

    08 suburban LTZ 5.3 misfire at idle

    So I figured ide mess around a bit since I’m bored and seen a post online a guy having the same issue on cy6. Said to unplug vlom plug so I did rig runs like shit but oil pressure is better and no misfire so far or the traction control either. May be the vlom I’m going to run it till it gets up...
  15. Marbor

    08 suburban LTZ 5.3 misfire at idle

    I have all the tools needed, I didn’t think of a vacuum leak due to good fuel trims
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