Air purge valve purges intermittently

Discussion in 'Trucks [ Eighteen Wheelers ]' started by mitmaks, Oct 1, 2022.

  1. mitmaks

    mitmaks Road Train Member

    2,446
    1,949
    May 16, 2014
    0
    I have '13 KW T660 Cummins isx15 and recently when I'm stopped and take off slowly it will "sneeze" several times intermittently. Ive replaced whole dryer assembly this spring and everything was fine until recently.
    At low speeds it will act like its grabbing brakes when it sneezes. What might cause this?
    TIA
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. AModelCat

    AModelCat Road Train Member

    27,626
    144,550
    Jul 7, 2015
    Canuckistan
    0
    The fact you mention it acts like the brakes are grabbing would make me look at the traction control system. Sounds like its detecting wheel spin when wheels aren't actually slipping. Doubt its the purge valve on the dryer.
     
    Crude Truckin', Heavyd and mitmaks Thank this.
  4. mitmaks

    mitmaks Road Train Member

    2,446
    1,949
    May 16, 2014
    0
    Well on my truck if it detects wheel spin it will light up traction light and I have control button to off/auto/on full time for traction control.
    I notice when I get unloaded and trailer is empty and I start driving it will do same thing too but once I get on highway and speed up it goes away.
     
  5. Heavyd

    Heavyd Road Train Member

    7,625
    6,023
    Feb 4, 2009
    0
    Hill start aid possibly.
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.