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Turbo Boost Gauge Question

Discussion in 'Trucks [ Eighteen Wheelers ]' started by MichaelP, Oct 30, 2011.

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  1. Oct 30, 2011 #1
    MichaelP

    MichaelP Bobtail Member

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    Aug 19, 2011
    Mayfield, KY
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    First off let me start by saying I did a search and did not find a answer to my question. I have w900l we have recently installed a turbo boost gauge in and when the boost starts to build the needle will viberate rapidly. It will not start to viberate until it gets above 15psi and continues all the way to 30 psi. The motor is a 5ek cat.
     
    MichaelP, Oct 30, 2011
    MichaelP, Oct 30, 2011
    #1
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  3. Oct 30, 2011 #2
    Oscar the KW

    Oscar the KW Going Tarpless

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    Try a different gauge. I put one in a freightliner years ago and it did the same thing. Got a different gauge and problem solved.
     
    Oscar the KW, Oct 30, 2011
    Oscar the KW, Oct 30, 2011
    #2
  4. Oct 30, 2011 #3
    V8Lenny

    V8Lenny Road Train Member

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    Use a very small rstrictor in the line before the gauge, it helps smooth the pulsing of the charge air. Better gauges have liquid filling to damp the vibration.
     
    V8Lenny, Oct 30, 2011
    V8Lenny, Oct 30, 2011
    #3
  5. Oct 30, 2011 #4
    JohnP3

    JohnP3 Road Train Member

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    Rock Creek B.C. Canada
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    If you put on a 1/8 air line to the gauge, it helps,as does putting the hose into the intake elbow, but as stated, oil filled gauge is the best.
     
    JohnP3, Oct 30, 2011
    JohnP3, Oct 30, 2011
    #4
  7. Oct 30, 2011 #5
    Smaggs

    Smaggs Pie Crust

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    oil filled gauges are awesome for pressure reading applications. They reduce vibration for a more accurate reading.

    I don't know what they do for the volvo 670s, but my gauge never wobbles. Might be digital, if that's possible. I don't know much about modern gauges. I'm talking regular, good old 'analog' gauges, most likely like the one you're describing.

    Good luck and let us know how it goes.
     
    Smaggs, Oct 30, 2011
    Smaggs, Oct 30, 2011
    #5
  8. Oct 30, 2011 #6
    MichaelP

    MichaelP Bobtail Member

    34
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    Aug 19, 2011
    Mayfield, KY
    0
    I agree 100% that liquid filled gauges are the best, but I want all my gauges to match I know that probably sounds stupid to some but it would drive me crazy to look at a mismatch gauge. I have to take a closer look at the line we have had 10 cats all with boost gauges and this is first one to have this problem. The gauge is less than a year old from KW may be a bad gauge thanks for all the replies
     
    MichaelP, Oct 30, 2011
    MichaelP, Oct 30, 2011
    #6
  9. Oct 30, 2011 #7
    dave26027

    dave26027 Road Train Member

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    Mounted too close to the intake valves. There might be another hole to use closer to the air-to-air cooler.
     
    dave26027, Oct 30, 2011
    dave26027, Oct 30, 2011
    #7
  10. Nov 2, 2011 #8
    Don2WS

    Don2WS Medium Load Member

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    Feb 26, 2010
    Sturtevant WI
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    my truck had the same problem picked one up from scrapyard because KW wanted 145 for the gauge $15 and its still working after two years
     
    Don2WS, Nov 2, 2011
    Don2WS, Nov 2, 2011
    #8
  11. Nov 2, 2011 #9
    MichaelP

    MichaelP Bobtail Member

    34
    1
    Aug 19, 2011
    Mayfield, KY
    0
    Yea I don't understand why parts are so expensive for this old of a truck. I think we mounted the line in the wrong spot
     
    MichaelP, Nov 2, 2011
    MichaelP, Nov 2, 2011
    #9
  12. Nov 3, 2011 #10
    Superhauler

    Superhauler TEACHER OF MEN

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    mine does the same thing its normal unless you do like the other post say, an oil filled gauge will settle it down.
     
    Superhauler, Nov 3, 2011
    Superhauler, Nov 3, 2011
    #10
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