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Thread: Sputtering every time I start up my truck no matter if hot or cold.

  1. #1
    Tuner tiresmokinV8's Avatar
    Join Date
    Aug 2008
    Location
    Ohio
    Posts
    123

    Sputtering every time I start up my truck no matter if hot or cold.

    Truck sputters at a certain mid throttle and wot then after a bit it drives just fine. Also does it sometimes after driving fine for a while and wont go away until sometimes turning the truck off then back on. Im lost

    Obvious at the 14sec range.
    Attached Files Attached Files
    2000 Sonoma Zq8 Extcab
    '08 Ly6 6.0, Nx nitrous plate, TSP vvt-2 cam + more goodies, SW Longtube headers, 4l80e, CircleD 3500 stall, HPTuners, Narrowed 8.8 swap: Moser axles, 3.73 gears, disc brakes, posi. Caltracs. Afco Coilovers
    Best time [email protected] na
    LSx Swap thread http://www.s10forum.com/forum/f213/l...n-name-459831/

  2. #2
    Advanced Tuner CatnipG5Bandit's Avatar
    Join Date
    Apr 2013
    Location
    El Paso, TX
    Posts
    297
    I am not an expert, especially in V8s, but I feel like this is going to be a mechanical problem. See how the injector duty cycle, MAF, timing, TPS, all of it wobbles around in the same way consistently?
    Attached Images Attached Images
    2008 Pontiac G5 2.2L (main oil seal became a crunchy Autumn leaf, RIP)
    2016 Fiesta 1.0L Ecoboost - Project "not-so-detestable"

  3. #3
    Tuner tiresmokinV8's Avatar
    Join Date
    Aug 2008
    Location
    Ohio
    Posts
    123
    I know but I dont know what it could be?
    2000 Sonoma Zq8 Extcab
    '08 Ly6 6.0, Nx nitrous plate, TSP vvt-2 cam + more goodies, SW Longtube headers, 4l80e, CircleD 3500 stall, HPTuners, Narrowed 8.8 swap: Moser axles, 3.73 gears, disc brakes, posi. Caltracs. Afco Coilovers
    Best time [email protected] na
    LSx Swap thread http://www.s10forum.com/forum/f213/l...n-name-459831/