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3406e harness low oil pressure sensor

Discussion in 'Trucks [ Eighteen Wheelers ]' started by mudinuri, May 25, 2011.

  1. May 25, 2011 #1
    mudinuri

    mudinuri Bobtail Member

    6
    0
    May 7, 2011
    courtenay british columbia
    0
    ive got a 1999 3406e have check engine lights coming on 46 ,24 they are low oil pressure sensor and open circut on the oil pessure sensor. found the short replaced that section , same codes come up, pulled more harness a part found more shorts thinking need to replace the harness.any ideas on reasonable parts or other options?
     
    mudinuri, May 25, 2011
    mudinuri, May 25, 2011
    #1
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  3. May 26, 2011 #2
    brenes-built

    brenes-built Light Load Member

    157
    15
    Apr 14, 2011
    Vancouver, Wa
    0
    I had the check engine,stop engine and fan kicking on a couple years back. I took it in and put it on the computer they said it was the harness..they told me about cutting it and replacing the bad section but it being a 99 I went ahead and replaced the whole thing.. I bought it for less than two humdred if remember right, and did it myself..havent had anymore issues, its also pretty simple to do..hope thats any help...
     
    brenes-built, May 26, 2011
    brenes-built, May 26, 2011
    #2
  4. May 26, 2011 #3
    e500gvr

    e500gvr Light Load Member

    125
    32
    Aug 21, 2006
    Bloomington,MN
    0
    e500gvr, May 26, 2011
    e500gvr, May 26, 2011
    #3
  5. May 27, 2011 #4
    Shade Tree

    Shade Tree Light Load Member

    177
    44
    May 15, 2011
    Galloway Ohio
    0
    Replacing the harness on the engine side is a piece of cake if you have the proper ball socket allen wrench. It looks like a allen wrench but the tip is rounded so that you can get into the allen bolt at an angle that secures the harness connector to the computer. The harness has one common power wire that connects a power supply to all of the sensors on the engine. If the fault keeps coming on try wiggling the harness and see if the check engine light comes on.
     
    Shade Tree, May 27, 2011
    Shade Tree, May 27, 2011
    #4
  7. May 28, 2011 #5
    mudinuri

    mudinuri Bobtail Member

    6
    0
    May 7, 2011
    courtenay british columbia
    0
    hey i replaced the one wire that had the shorts and seems to be working but am waiting for more issues saw some chaffing that hadnt wore through yet but expect something to start . talked to a westernstar dealer and they thought ive been lucky as lots of there 2004 cat engines are already showing signs of chaffing and harness problems .i think a replace is the best fix .:biggrin_25520: any advice is greatly appriecated thank guys
     
    mudinuri, May 28, 2011
    mudinuri, May 28, 2011
    #5
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