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Thread: Surging Idle Drive-By-Wire LSx

  1. #1

    Default Surging Idle Drive-By-Wire LSx

    I'm having surging issues at idle and at light throttle in gear. Base fuel should be very close. Have reset TPS, changed MAP sensors, adjusted Pedal vs TB Table, both WBO2 in the truck match. When it surges, AFR surges from 12.5 to 16. Base Fuel Table adjustments don't help anything. I have tried most of the base calibrations/Global Folders and they didn't help.

  2. #2
    Join Date
    Dec 2009
    Location
    Ellington, CT
    Posts
    5,868

    Default

    Is the Idle Spark control enabled (Idle ICF)?
    Also, see if this post helps your idle quality:
    http://www.yellowbullet.com/forum/sh...8&postcount=13 (Related Forum Post - Doug F., Chief EFI Engineer @ Holley EFI)

    May God's Grace Bless You

    '78 BRONCO: 508" stroker, TFS heads, Dominator MPFI & DIS, cold air induction, dual 3" exhaust/Magnaflow mufflers, 100HP progressive dry direct-port NOS, A/C, Lentech Strip Terminator wide-ratio AOD, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, custom traction bars, 4" lift, 35" mud tires

  3. #3

    Default

    Idle ICF is not enabled. Adjusting TPS vs Pedal does not seem to make a difference.

  4. #4
    Join Date
    Dec 2009
    Location
    Ellington, CT
    Posts
    5,868

    Default

    You'll probably need to call Holley Tech...I'm not well versed with Drive-By-Wire.

    May God's Grace Bless You

    '78 BRONCO: 508" stroker, TFS heads, Dominator MPFI & DIS, cold air induction, dual 3" exhaust/Magnaflow mufflers, 100HP progressive dry direct-port NOS, A/C, Lentech Strip Terminator wide-ratio AOD, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, custom traction bars, 4" lift, 35" mud tires

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