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Thread: Lean spikes

  1. #1
    Lifetime Member hquick's Avatar
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    Default Lean spikes

    Hi all,
    well, I've nearly got my VE table sorted. One thing I have happening is whilst logging, if I get off the pedal altogether when slowing down (as recommended) and then get back on the pedal, I get a lean spike?
    Any idea's on how to get rid of this?
    Attached Files Attached Files
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  2. #2
    Lifetime Member hquick's Avatar
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    Default

    Is it anything to do with the throttle cracker?
    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

  3. #3
    Junior Member
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    Nov 2006
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    Default

    The actual WBO2 sensor could be the problem.

    http://forum.efilive.com/showpost.ph...17&postcount=2

  4. #4
    Lifetime Member hquick's Avatar
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    Default

    I don't think so. Firstly because the WBO2 is basically brand new and scondly as it's not prolonged...it's only a very quick spike.
    Here you can see it in the columns around the 2400rpm mark.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Howard

    YOU ONLY NEED TWO TOOLS IN LIFE - WD-40 AND DUCT TAPE. IF IT DOESN'T
    MOVE AND SHOULD, USE THE WD-40. IF IT SHOULDN'T MOVE AND DOES, USE THE
    DUCT TAPE.
    IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.


    98 K1500 'HOLDEN' Suburban.
    Custom Whipple SC, Mercruiser Marine intake, 0411 PCM, 4L80E w/shift kit

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