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ECUflash Car won't run, P0105 but it's a Speed Density setup

Posted by jinscho, May 31, 2020

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  1. jinscho

    jinscho Proven Member

    461
    237
    Joined Jun 16, 2017
    Bangor, Pennsylvania
    So, a few days ago I had the car running great. It was VERY rich at idle, but I wasn't concerned with it as I have a remote tune scheduled for tomorrow with Ricky from Rix Racing. In preparation for the remote tune, Ricky gave me a small checklist of stuff to do before Monday, none of which should have caused my current issue.

    BLT passed at 30 psi, I wired in my wideband to pin 75 on the ECU so it can be logged, verified mechanical timing, pulled the plugs and verified gap. I also wired in a new head unit.. irrelevant, but just covering all of the bases.

    After completing all of the above, I went to start the car and it wouldnt start. Almost sounds like it's down a cylinder, but I already verified fuel and spark across all 4 cylinders. ECU was throwing codes for P0100 and P0105, both related to the MAF (which was never installed as I am running speed density, with a GM IAT wired in, and a Mitsu Style Omni 4 bar where the stock MDP was). I grabbed a known good MAF and installed it. P0105 remains and the car still won't run properly.

    I'm at a loss currently and NEED to have this fixed by tomorrow at 10am. Any guidance would be appreciated.
     

    Street Build 2K  13

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · manual · 2G DSM
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  2. Vegas smith

    Vegas smith Proven Member

    3,153
    1,696
    Joined Dec 2, 2002
    Houston, Texas
    Post a log of the attempt to start.
     

    Street Build 4K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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  3. jinscho

    jinscho Proven Member

    461
    237
    Joined Jun 16, 2017
    Bangor, Pennsylvania
    Log attached, it runs (horribly, at around 400 rpm) for about 5 seconds before stalling. If I give it some gas, I can keep it running a little bit longer...
     

    Attached Files:

    Street Build 2K  13

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · manual · 2G DSM
    Loading...
  4. jinscho

    jinscho Proven Member

    461
    237
    Joined Jun 16, 2017
    Bangor, Pennsylvania
    Here's a log with me giving it some gas to keep it running
     

    Attached Files:

    Street Build 2K  13

    1999 Mitsubishi Eclipse Spyder N/T
    fwd · manual · 2G DSM
    Loading...

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