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  1. K

    99 tahoe misfire, win some,lose some

    Ahh i see. That type of diag tool i dont have access to at the moment, though i may be able to borrow one to look at the counts.
  2. K

    99 tahoe misfire, win some,lose some

    I did answer. There is a confirmed P0302 code and a pending p0302. I guess it does make sense as far as it fixing the codes,however. Cycling between open and closed loop constantly? Even after being warm? Just nothing ive seen before. Anyways, its been tough getting time to work on it. Ill...
  3. K

    99 tahoe misfire, win some,lose some

    Sunlit, did you see this? Do i have the wrong impression of forums? Im not sure where the attitude is from ,but if anyone can actually be helpful instead of a dick its be great. For the sake of being helpful and using the forum for its intended purposes..anyone thats run into this problem: im...
  4. K

    99 tahoe misfire, win some,lose some

    Well, zero help then.
  5. K

    99 tahoe misfire, win some,lose some

    Is there a reason why you mentioned this?
  6. K

    99 tahoe misfire, win some,lose some

    At this point. Im leaning towards replacing the fuel spider, but when i was back there it looks like the schrader valve cover was missing, anyone know of a way to tell if somethings been replaced? Would a leak at the very back of the intake mani cause a misfire on #2 cylinder?
  7. K

    99 tahoe misfire, win some,lose some

    I also took a look at the intake mani, there seems to be a wet spot at the wayy back near the firewall. Didnt smell like much but i couldnt tell where it was coming from. I topped off the coolant and will keep an eye on it its not my daily driver so its tough to spend time with it.
  8. K

    99 tahoe misfire, win some,lose some

    Oop sorry sunlit. Didnt realize you posted. It has a hard P0302, and a pending P0302 as of earlier today. I verified it stays in closed loop now. I took out the #2 plug to make sure it was dry and it was fine. Not fouled from what can see.
  9. K

    99 tahoe misfire, win some,lose some

    Can anyone else chime in?
  10. K

    99 tahoe misfire, win some,lose some

    Your problem seems to be the opposite. I suggest looking for vac leaks. I dont know why i keep thinking there isnt a perfect way to diag a leaking intake gasket. I wonder if im chasin my tail here.
  11. K

    99 tahoe misfire, win some,lose some

    Also
  12. K

    99 tahoe misfire, win some,lose some

    See pic
  13. K

    99 tahoe misfire, win some,lose some

    Forgot to mention, fuel trims are negatives now... no matter the revs. Maf reads between .86 to 4.3 lb/m between idle and say 70% TPS. Map reads at a steady 9.x "hG during idle. Drops slightly at 2-3.5k RPMs,to say 8.x "hG and if i let off the gas quick drops to 6.x"hG. IAT readings are correct...
  14. K

    99 tahoe misfire, win some,lose some

    Man this has been a little annoying. I had a thread open some time ago with little to no help regardimg my specific problem and everything ive found seems to be closed out with no answers. So, im hoping that this thread will bring some ideas or help the next person with similar issues. How i...
  15. K

    Finding this style bumper!

    Does anyone know what model this bumper came on? Or what i have to search for to get one?for some reason the factory style push blocks make me happy. Lol
  16. K

    Closed Loop Issues

    I dont think i can get a scanner like that. I have a cheapy actron that can read the lb/m on the maf, iat, and 02 sensor voltage. None of the 02s seem to hit over .5 volts though they do fluctuate a little
  17. K

    Closed Loop Issues

    Hey guys. Just picked up a 99 tahoe OBS for pretty cheap. But it needs some work. The main issue i'm trying to tackle a closed loop issue that comes up once its warm. Truck starts right up with no hesitation. Once it warms up and hits closed loop. It idles poorly and misfires to the point it...

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