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Cummins ISX Intermittent lope # Idle

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Displaced Yooper, Feb 1, 2011.

Page 2 of 2
  1. Feb 13, 2011 #11
    me myself and I

    me myself and I Heavy Load Member

    731
    312
    Oct 5, 2009
    vernon hills,Il
    0
    Same thing just started happening with my engine. I even thought it was bad carma reading that post. But as I started looking at it today, I think I found the problem. And much cheaper to fix too. Looks like the spring holding fuel filter in that see thru cup was put in wrong way last time i had oil changed. Filter is kinda wobbly and i see ocasional air buble . As i am due for next oil change soon, I hope it will fix it.
     
    me myself and I, Feb 13, 2011
    me myself and I, Feb 13, 2011
    #11
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  3. Oct 22, 2011 #12
    Pappa Bear

    Pappa Bear Light Load Member

    105
    22
    Dec 20, 2010
    Springfield, OH
    0
    Pablo, why is it better to change all? I had my metering solenoids go bad a year and a half ago. They were changed but we did not change the timing solenoids. I'm have a lot of noise and vibration under a hard pull but no engine codes. Could the timing actuators need changed?
     
    Pappa Bear, Oct 22, 2011
    Pappa Bear, Oct 22, 2011
    #12
  4. Oct 22, 2011 #13
    Displaced Yooper

    Displaced Yooper Light Load Member

    152
    49
    Oct 18, 2010
    Detroit, MI
    0
    As a VERY belated update, my problem ended up being a bad exhaust pressure sensor. I still have the original metering solenoids, and haven't had any rough idle issues since the sensor was replaced.
     
    Displaced Yooper, Oct 22, 2011
    Displaced Yooper, Oct 22, 2011
    #13
    dustinbrock, mrtrdrvr and Pappa Bear Thank this.
  5. Oct 23, 2011 #14
    Pappa Bear

    Pappa Bear Light Load Member

    105
    22
    Dec 20, 2010
    Springfield, OH
    0
    How did you find out it was the exhaust pressure sensor? Did it throw codes?
     
    Pappa Bear, Oct 23, 2011
    Pappa Bear, Oct 23, 2011
    #14
  7. Oct 23, 2011 #15
    Displaced Yooper

    Displaced Yooper Light Load Member

    152
    49
    Oct 18, 2010
    Detroit, MI
    0
    Found it when I was having some other work done. Needed a new CAC, some A/C work, and a check of the fuel system. Right after the codes from the previous work was cleared, the code for the Exh press sens was thrown. As soon as it was fired up after the sensor was replaced, the idle was smooth as it ever was.
     
    Displaced Yooper, Oct 23, 2011
    Displaced Yooper, Oct 23, 2011
    #15
    Pappa Bear Thanks this.
  8. Dec 12, 2018 #17
    davidpennington

    davidpennington Bobtail Member

    1
    0
    Dec 12, 2018
    0
    Hey I was wondering guys about this fuel actuator on the ISX pump is it possible that can be intermittent and working one second and then 30 minutes later not work very good
     
    davidpennington, Dec 12, 2018
    davidpennington, Dec 12, 2018
    #17
  9. Dec 12, 2018 #17
    Heavyd

    Heavyd Road Train Member

    7,752
    6,186
    Feb 4, 2009
    0
    Yes, they start to gum up. There is a video on Youtube I think of someone taking one apart and cleaning it.
     
    Heavyd, Dec 12, 2018
    Heavyd, Dec 12, 2018
    #17
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