low oil pressure in 2007 isx

Discussion in 'Peterbilt Forum' started by 388petedh, May 27, 2011.

  1. 388petedh

    388petedh Bobtail Member

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    May 27, 2011
    RI
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    got a 2010 388 with a 600 cummins...about 150 hours into a new service, i start to lose oil pressure to the point where the low oil pressure light comes on and i have to limp it back to the yard. If i put on a new filter at this point the pressure is fine again anyone heard of this problem thanks in advance
     
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  3. BIGMIKE1

    BIGMIKE1 Light Load Member

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    Jan 23, 2010
    Missouri
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    You might have a defective oil pump, cummins runs low oil presure,but not that low where the warning light comes on. When the oil pump gets weak and your filter gets more restrictive/dirty it doesnt take long to drop.
     
  4. Krooser

    Krooser Road Train Member

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    Wisconsin
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    check the oil pressure with a gauge... the oil pressure switch may be bad.
     
  5. SL3406

    SL3406 Medium Load Member

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    Jan 10, 2011
    Oklahoma
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    Thats a fairly common problem with the ISX. The oil filters are plugging with soot. What oil and filter are you using? Fleetguard came out with a updated filter # LF 9070 thats suppose to help. Another option would be to install a bypass filter to help remove some of the soot from the oil.
     
  6. freightlinerman

    freightlinerman Road Train Member

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    Mar 4, 2011
    Florida
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    If your oil pressure is getting so low that you get a tell tale on, shut it off and call the service truck or tow truck and do something. If the engine blows and you're under warranty, they will see you ran the truck and drove it instead of pulling over and deny your warranty.
     
  7. bossboy2

    bossboy2 Light Load Member

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    Aug 20, 2011
    Houston, TX
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    And I just found out today that an ISX in-frame is now...get this:...:biggrin_2556:$37000.00 :biggrin_2556:
     
  8. cowcatcher

    cowcatcher Light Load Member

    You have a oil filter plugging up. Seen it to many times here recently.
     
  9. Krooser

    Krooser Road Train Member

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    Wisconsin
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    Fleetguard had a filter for the ISX that was loosing an o-ring and plugging up the internal oil lines... do a search here and you will find the thread...bad news.
     
  10. country29

    country29 Medium Load Member

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    Feb 27, 2010
    Arkansas
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    how long are you going between oil changes? if the engine was built before nov 2010 then it has the old piston skirt design that in the dpf engines allows too much soot to buildup on the bottom of the head and when it breaks loose it clogs the oil filter. engines built after nov 2010 they have a diff design piston skirt that has alleviated this issue. also if you are running over 20,000 miles on pm and using donaldson oil filters you will have oil press issues about 15,000 miles in. just my experience as a mechanic.
     
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