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  1. #11
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    Brian Rota
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    thank you for looking into it
    Last edited by brota; 06-21-2018 at 12:52 PM.

  2. #12
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    never heard of using "gumout" to test for vac leaks around manifold....starter fluid, yes.

    The MAF is directional...I assume you have it installed so the arrow points towards engine?

    Maybe that new Delphi style blade MAF is bad. FWIW I tried one and it worked fine...does not mean everyone is though

    Fred is infinitely more versed in understanding data logs than me but a rich condition is often due to a vacuum leak after MAF

    Maybe your "ebay intake" is not sealing as it should

    you mentioned you had "MAF problem" before which apparently prompted you to replace MAF...are you sure the wiring to it is good and you have plugged in the connector the right way
    96 BBB 383/T56

  3. #13
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    Quote Originally Posted by brota View Post
    hello
    After dealing with some things last year I put the car away.
    I noticed my original air intake was leaking so I added an ebay air intake kit with a new delphi maf because I was having MAF issues last year.

    The car feels to be running a little rough almost didnt stay running but figured it was learning the maf.
    I checked for codes because the light came on for few with a code 44.
    I did run scan9495 and it appears my MAF is not dumping fuel like the defective maf I had last year.

    The check engine light went off after a little but I didnt check if the code was still there.
    Will a bad O2 sensor make it run rough? I assume 44 is the drivers side? I replaced with a bosch a couple of years ago. Are those o2 sensors good can they go bad with like 1000 miles on it?

    I have attached my scan csv incase anyone can take a look at it and see if something jumps out.
    https://black55chevy-my.sharepoint.c...5nJTQ?e=fLdpl2

    Thank you
    Brian
    does the new maf have a screen? sure your "fleabay" cold air isn't sucking closed? these engines need a 3.5" Intake to breathe (maf diameter)

    Sent from my SM-N950U using Tapatalk
    2021 Charger Scat 392
    1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot

    The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
    10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!

  4. #14
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    yes it has a screen it
    it is metal pipes

  5. #15
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    Quote Originally Posted by brota View Post
    yes it has a screen it
    it is metal pipes
    there are couplings on it...

    Sent from my SM-N950U using Tapatalk
    2021 Charger Scat 392
    1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot

    The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
    10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!

  6. #16
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    Hello
    well got it back together fire damaged was only a few tubes.
    I verified the cold air was tight.
    I fixed any hoses that looked questionable.

    Tested fuel pressure it was about 43, 38 running held pressure for about 30 min.
    Check engine did not come back on with lean condition.

    Here is the latest log.
    https://black55chevy-my.sharepoint.c...OPmPg?e=8UMTV8

    I was driving it, it seems to hesitate somewhere between 1200-2000.jpeg.JPG
    Last edited by brota; 05-10-2018 at 09:31 PM.

  7. #17
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    tested vacuum lines again by spraying carb cleaner around nothing seemed to make the engine surge.
    Anyone have an idea why the car hesitates at around 1200?

    Thank you
    Brian

  8. #18
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    I'll try and take a look at the data log. I was away over the weekend.

  9. #19
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    Thank you I do appreciate it.
    The hesitation seems to be a common lt1 issue but nothing really solid as a fix.
    It doesnt happen when the car is cold, which is strange.

  10. #20
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    the issue is still there when I unplug the MAF, it only seems to happen underload not in park
    Last edited by brota; 05-15-2018 at 08:24 AM.

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