Recent content by Chevy Express

  1. C

    at a loss. replaced MAF

    Haven't forgotten about you guys. I literally just got my scope stuff the other day, now learning hopefully an update soon
  2. C

    at a loss. replaced MAF

    do any of you know where the VCM computer is in the express van?
  3. C

    at a loss. replaced MAF

    well i just bought a poor man pico. has to be the wiring to the MAF, I have a feel the scanner just isn't seeing it.
  4. C

    at a loss. replaced MAF

    SO the MAF is in use even at WOT? Am I understanding this correctly?
  5. C

    at a loss. replaced MAF

    is the MAF ignored as well? the FUEL TRIMS go to zero
  6. C

    at a loss. replaced MAF

    what happens at WOT with MAF connected, is it still using sensor? or going to default tune?
  7. C

    at a loss. replaced MAF

    actually let me ask this, how does it know the calculations for the VE table? is it taking 02 sensor input?
  8. C

    at a loss. replaced MAF

    so what does that mean? I'm not familiar enough to understand if thats some sort of answer
  9. C

    at a loss. replaced MAF

    Then why does the problem go away, if i disconnect it, but when connected bank 1 trims remain normal, yet bank 2 trims go rich instantly during the bucking? The must be doing some other calculations now since the sensor is removed. since the maf affects both banks, i don't see how only 1 bank...
  10. C

    at a loss. replaced MAF

    South Main auto is 2 and half hours from me. IDK if i am at that point yet. I believe i had 2 issues. I believe my MAF was slowing failing (threw out of range and lean codes) and a bucking issue with bumps. after replacing the MAF, my power has significantly returned, but going over bumps still...
  11. C

    at a loss. replaced MAF

    So an update. I'm still screwed. But there is an update. So i replaced the delphi with a Ac delco reman. Numbers looked much better things started zeroing out for the most part. The issue. When going over bumps with the MAF plugged in, it starts bucking. Short term fuel trim on Bank 2 starts...
  12. C

    at a loss. replaced MAF

    appreciate this . will look at it as soon as i can
  13. C

    at a loss. replaced MAF

    na don't have that issue, fits perfect. ty though
  14. C

    at a loss. replaced MAF

    how would i determine this? it bolted in fine. what does the 3" refer too? rock auto confirmed the part number for me
  15. C

    at a loss. replaced MAF

    thats why i bought it. i will say its completely different, plastic, with a pigtail on it, well another is on the way, from ac delco reman, so hopefully i can figure out which way to go with this. it seems to love the -18FT, I just don't understand how one is at +25 the other is at -18, and...
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