ISX 15 CM870 power loss

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Dadetrucking305, May 18, 2021.

  1. Dadetrucking305

    Dadetrucking305 Medium Load Member

    Sep 15, 2011
    San antonio texas
    I have a 2003 international 9900 with a 04’ Cummins ISX CM870.Yesterday I was driving and it was starting to feel sluggish and when starting to go up a hill it was gutless even when the pedal was to the floor.The only thing that didn’t seem right at the moment was that I was not hearing the turbo spooling.After a while the power came back and I could hear the turbo spooling.I read on another forum that it could be the actuator so I disconnected the air line to it with the motor on and tried to pull the rod down and it wouldn’t budge.So I hooked up an air chuck regulated at 60psi and the rod went down a good amount but I still didn’t hear the turbo spooling which from what I read was supposed to happen unless I read it wrong.Any help would greatly be appreciated.BTW I have an inline 6 just waiting on a 6 pin because they sent me a 9 pin with it.
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