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My VS V6 has poxy fuel economy!!!

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by Fitzy3VSVY, Jul 24, 2006.

  1. Fitzy3VSVY

    Fitzy3VSVY New Member

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    Hey ppl I have a VS V6 (3.8L Ecotec) and I have really bad fuel economy like I only get about 400kms to a tank, is that normal?, if not what is rong with it???
    can anyone help me with this problem or tell me what I can do to fix this problem,

    Thanx Heapz...
     
  2. Crabito

    Crabito Member

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    Well I got a VS 1997 esteem V6 ecotec and I get 400km out of a full tank
    its got pacemaker extractors , power chip , cold air intake ect
    but I drive it like I stole it
    so yea I reckon thats right
     
  3. Torquen

    Torquen Boost FTW

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    i get 330km per tank.
     
  4. DeiCide

    DeiCide DeiCide

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    lol, I get about 300-350kms a tank... I wish I could get 400kms out of my tank!! (Not Possible how I drive!):driving:
     
  5. Joes_meat

    Joes_meat Guest

    Does it blow smoke? Does it lose water? How many km's has it done? Does the transmission slip? Do you have a lead foot? What type of driving do you predominantly do (city, highway etc)? Does it take a very long time to warm up? At what temperature does it normally sit on the gague? Does it idle rough? Has it lost power (for reference, it should go at least as well as your VY, possibly slightly quicker)? Does it drive well when warm? Does it drive well when cold? Does the transmission kick-down and shift up properly? Does it sit in the appropriate gear? Have you ever replaced the Oxygen Sensors? When was it serviced last? When was the last time the (leads, air filter, oil, spark plugs) were changed?

    Need a bit more info mate.
     
  6. evil_monkey

    evil_monkey New Member

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    350 - 400 in the ute bit more if you granny foot keep the tarp on and do long distance driving

    300 ish in the sedan a tad more if your lucky but more likely less lol (was getting 180 to a tank when we bough it)
     
  7. pandacav

    pandacav New Member

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    i get 380 in the city but like 520-550 in the country. So year sounds about right if your doing stop start driving.
     
  8. holden007

    holden007 VRII

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    450ks in city, 550-590ks highway....sometimes 400k's in city if I push.
     
  9. fitzy2005

    fitzy2005 New Member

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    around 500 in town, extractors, 2 1/2 " exhaust, chip, cai and k&n (you cant call wer ei live a town though :p damn hervey bay)
    check your computer, you may have oxy sensor issues, or just miote need a service
     
  10. Fitzy3VSVY

    Fitzy3VSVY New Member

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    Yea thanx heapz pplz ill suss out all what u guys have said and yea im gonna be doin a bit of engine work and exhaust n extractors, n k&n filter with SS induction kit.

    Thanx...
     
  11. SaGe

    SaGe New Member

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    lol mine was drinking 19.1L/100kms when i first got it, changed the O2 Sensors, full service and flushed the coolant and now drinking on average 12.64L/100kms which is bout 450-460kms for a full tank. im gonna try make it more effiecent by changing the thermostat and coolant temp sensor whenever i can be bothered
     
  12. SaGe

    SaGe New Member

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    i found that the most common thing that effects fuel economy in a VS V6 is when the ecu is running in open loop mode
     
  13. tripper69er

    tripper69er Guest

    i get about 400KM in town and out on highway sitting on 100-120 i get maby 200
     
  14. staypuft

    staypuft New Member

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    Depends who's driving - and where

    If I'm driving to work (150 km round trip mostly on freeway) I can squeeze 600km+ out of a tank.

    If the missus is driving locally, 400km is about it..

    That's in a V6 Eco
     
  15. boojak87

    boojak87 New Member

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    I'm curious as to what this open loop mode is on a VS ecu. I've had bung fuel economy ever since we bought the car (practically from new) and i don't think we've ever got more than 400kms out of a tank! Just wondering if this could be it? The only other thing that i had to check/clean/change were injectors then i would have been stuck as to what could be causing my poor fuel economy. Could my ecu been on open loop and cause this sort of economy?

    Cheers,
    Boojakz.
     
  16. Raptorsc

    Raptorsc RAPTR6

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    Have the O2 sensors checked for normal operation.

    All VS's have a dodgy wiring connection in the main wiring loom behind the passenger side cylinder head. You have to unwrap this portion of the loom and then find 2 small black wires which come together at a bare connector into a single wire. This connector has to be soldered solid to prevent electrical resistance at the joint.

    Aside from that, the air filter needs to be clean, exhaust system in good condition (no blocked or partially collapsed mufflers), plugs good etc etc and it should have more normal fuel economy
     
  17. heya guys, i get 550 - 600km (everday driving) per 63ltrs of fuel, vr v6 5spd,
    before i converted to manual, i was getting about 400km per tank,,

    on freeway i average 7-8ltr per 100km.

    not bad for a car that has done 300,000km ey?

    hehe
     
  18. 08_adaml

    08_adaml New Member

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    yeah ive got a v6 manual and get approx 500-600km a tank.
     
  19. Joes_meat

    Joes_meat Guest

    I just replaced my thermostat. ($12)

    Getting an extra 100km out of my tank. So about 550km's in mixed driving.
     
  20. johnnyk

    johnnyk New Member

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    thermostat

    Is that the coolent temp. sensor? I'm getting around 300km/tank, city/suburb driving, not being a lead foot either. Generally keeping it under 2,500rpm :bang:
     

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