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Thread: Crazy idle surging after converter swap

  1. #1
    Tuner
    Join Date
    Sep 2004
    Location
    New Hampshire
    Posts
    98

    Crazy idle surging after converter swap

    i just had my trans rebuilt 4L80e and went from a 13" 2600 stall converter to a 11" 3000 stall. ever since my idle has been surging bad and stalling at almost every stop and when i go reverse to drive, etc. it also surges when i take my foot off the gas.
    02 GMC Sierra 2500HD CC 4X4 6.0L LME 408 w/ET245, Kenne Bell 2.8L, Yank SC3000

  2. #2
    Tuner
    Join Date
    Sep 2004
    Location
    New Hampshire
    Posts
    98
    sorry, was hammered when i posted this up, lol.

    it's a 2002 GMC Sierra 2500HD with a 8.5:cr 408in with Kenne Bell 2.8L twin screw making 13lbs boost. Truck is tuned 2-bar SD.

    the log i posted is of the truck "idling" in my garage last night. The log stops when the truck stalled if i remember right.

    peep the iat temps too, jesus. that's nothing though. they hit 260 on the street the other day.

    I do have a WB but it isn't hooked up to the hptuners yes. gotta figure out how. Its a dynojet wideband commander
    02 GMC Sierra 2500HD CC 4X4 6.0L LME 408 w/ET245, Kenne Bell 2.8L, Yank SC3000

  3. #3
    Tuner
    Join Date
    Sep 2004
    Location
    New Hampshire
    Posts
    98
    not that anyone is actually gonna reply, but, here's a log of my drive to work yesterday
    02 GMC Sierra 2500HD CC 4X4 6.0L LME 408 w/ET245, Kenne Bell 2.8L, Yank SC3000