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Cummins Isx 500hp

Discussion in 'Trucks [ Eighteen Wheelers ]' started by 18wheelroller24/7, Jun 30, 2014.

  1. Jun 30, 2014 #1
    18wheelroller24/7

    18wheelroller24/7 Bobtail Member

    14
    0
    May 25, 2014
    0
    :biggrin_2553: Have 06 Cummins ISX 500hp. On Volvo 670 13 speed problem is in lov gears engine stalls and locks the speed. If lets say 9 hi I go 55mph and if I hit a little downhil and hold gas all the way to the floor my engine stalls and I can't speed up. I need to take gear out and back in in order to work.
    Other problem,, I have enginebrake 6speed it has no pressure no power at all.
    Showing oil coming out of engine brake harness. Replaced new harness stil same. Oil temperature sometimes hits 242 ℉.
    No ground torque at all.
    Low speeds when I shift and try to speed up it shakes the front dashboard crazy. Idk. It sucks I know.
    Sometimes spills antifreeze on a ground at over tank hose. ..:biggrin_2553:
     
    18wheelroller24/7, Jun 30, 2014
    18wheelroller24/7, Jun 30, 2014
    #1
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  3. Jun 30, 2014 #2
    Passin Thru

    Passin Thru Road Train Member

    1,918
    565
    Mar 8, 2007
    VA
    0
    Sounds like engine brake is engaging. Unhook it.
     
    Passin Thru, Jun 30, 2014
    Passin Thru, Jun 30, 2014
    #2
    18wheelroller24/7 Thanks this.
  4. Jun 30, 2014 #3
    GreatWall

    GreatWall Bobtail Member

    1
    1
    May 24, 2014
    0
    Time for a new truck?
     
    GreatWall, Jun 30, 2014
    GreatWall, Jun 30, 2014
    #3
    18wheelroller24/7 Thanks this.
  5. Jun 30, 2014 #4
    BulletProof

    BulletProof Medium Load Member

    503
    322
    Feb 17, 2013
    Alabama
    0
    If I'm reading the first part correctly (it is kinda hard to make out), it sounds like he is hitting the governor in the gears. My truck I had before had a 10 speed and would not go over 60mph in 9th. If I put it on the floor, the engine would "stall out" at around 1800mph in 9th gear and I would have to go to 10th. The sounds kinda like what he might be doing.

    The problem with the engine brake could be caused by the EPG (exhaust pressure governor). I'd just replace it. Relatively cheap and will eliminate that.

    Antifreeze problem could be a bad air compressor putting air into the coolant reservoir.

    Sounds like you (or previous owner) may have neglected a few things.
     
    BulletProof, Jun 30, 2014
    BulletProof, Jun 30, 2014
    #4
    18wheelroller24/7 Thanks this.
  7. Jun 30, 2014 #5
    Oscar the KW

    Oscar the KW Going Tarpless

    12,246
    28,114
    May 19, 2011
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    Could be a head gasket also.
     
    Oscar the KW, Jun 30, 2014
    Oscar the KW, Jun 30, 2014
    #5
    18wheelroller24/7 Thanks this.
  8. Jun 30, 2014 #6
    BulletProof

    BulletProof Medium Load Member

    503
    322
    Feb 17, 2013
    Alabama
    0
    Indeed it could. I was trying to give the man some hope
     
    BulletProof, Jun 30, 2014
    BulletProof, Jun 30, 2014
    #6
    18wheelroller24/7 Thanks this.
  9. Jul 1, 2014 #7
    18wheelroller24/7

    18wheelroller24/7 Bobtail Member

    14
    0
    May 25, 2014
    0
    Thanks guys it helps a lot I will look forward to replace EPG but one more thing I didn't mention is that turbo boost gauge is late and when it comes to 35 Psi it goes back to 30 and back when I am in a gear and trying to push it to a higher gear.
     
    18wheelroller24/7, Jul 1, 2014
    18wheelroller24/7, Jul 1, 2014
    #7
  10. Jul 2, 2014 #8
    Duramaxxed

    Duramaxxed Light Load Member

    155
    60
    Jan 2, 2012
    Bourbonnais, IL
    0
    Isx engines don't have a epg. Any engine lights?
     
    Duramaxxed, Jul 2, 2014
    Duramaxxed, Jul 2, 2014
    #8
  11. Jul 2, 2014 #9
    Duramaxxed

    Duramaxxed Light Load Member

    155
    60
    Jan 2, 2012
    Bourbonnais, IL
    0
    Change the exhaust gas pressure sensor and terminals. Known for pin fretting. Should have cel on tho.
     
    Duramaxxed, Jul 2, 2014
    Duramaxxed, Jul 2, 2014
    #9
  12. Feb 22, 2015 #10
    Durtyda

    Durtyda Bobtail Member

    5
    1
    Oct 22, 2014
    0
    do a pressure test on the cac!! on the right side engine up front.replace the manifold pressure sensor.then on the leftside intake take the manifold boost sensor out.it will be carbon packed.DONOT clean it.REPLACE it.no ?S asked. then smile!! for a bit.your cummins in suffering from carbon packing.enjoy the torque it should be top notch afterwards.thanks dan 2010-386 pete.550 cummins
     
    Durtyda, Feb 22, 2015
    Durtyda, Feb 22, 2015
    #10
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