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My Vy 3.8l fuel consumption seems high

Discussion in 'VY Holden Commodore (2002 - 2004)' started by Stephentsikleas, Jun 5, 2019.

  1. Stephentsikleas

    Stephentsikleas New Member

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    My VY COMMODORE 3.8L is registering 15l or less per 100km around town and traffic lights but the computer seems indicate a diffrence of kilometres fuel left to the actual kms im traveling. And im wondering is it a computer problem or air flow meter or pther reason.
     
  2. Whiteshark68

    Whiteshark68 Member

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    it will depend on the type of driving you are doing and what your average speed is
    my trip computer always says my avg litres per 100lkm is always around 18 - 19 but my avg speed is always only about 25km/hr but i only do short distances on average of about 3kms or less per trip but when i do a long trip it falls to around 8 - 10 ltrs/100kms
     
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  3. krusing

    krusing Active Member

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    Same with my VY Super6, around the suburbs is says approx. 14 > 17 [depends the traffic, and how I drive :rolleyes:],
    Out on the highway it can come down to approx. 8.4 [krusing :D at 100 > 110km/h] [no pun intended :cool:]
    Not bad for a Super6, as it breaths a lot better.
     
  4. delcowizzid

    delcowizzid on holiday

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    My vx does 11.7-12 average city usage mostly 50kmh zones and a big hill in and out of my suburb. Start stop in traffic is a big killer of fuel economy in these things when you watch the instant litres/100 taking off you will see why lol
     
  5. Whiteshark68

    Whiteshark68 Member

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    On the occasion that i have my trip meter on instant fuel when i take off even while driving like a granny it peaks at over 50litres/100kms and if i drive more spiritedly it hits 99+
     
  6. delcowizzid

    delcowizzid on holiday

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    When cold mine will go high 40s taking off gently when hot its goes around 14 that's driving as efficient as possible. Mines real high ks 500000+ and I've tweaked it a bit o2 sensors are turned off and egr switched off in the tune and blocked off and has a few timing tweaks in the tune but a stock one should return similar .If your o2s are old and tired won't help the situation mine are turned off un till I fix my leaking inlet gaskets and fit the new 1s I have on the shelf
     
  7. krusing

    krusing Active Member

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    That's normal, because that's live data, and/or momentary data
    Where the computer works on an average [speed/air mass/revs/throttle position/load/type of fuel/type of driving].
     
    Last edited: Jun 6, 2019

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