Cummins ISX

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by timenowover, Mar 4, 2024.

  1. timenowover

    timenowover Bobtail Member

    Mar 4, 2024
    Issue: When at highway speed, if I let off the throttle I loose all power. I can shift thru all gears just fine. When I let off the throttle I get all smoke and no response and sometimes backfires. Have checked and reset the turbo actuator. Replaced ECM, and replaced the fuel solenoids and the TPS.
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