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Thread: 1JZ- how to tell it's going into closed loop?

  1. #16
    Rest in Peace Conversion King ViPeR_NiPPleX's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    are you throwing your petrol out the window? something very wrong there!

  2. #17
    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    chuck it on dyno just for exhaust/AFR check...

    it's either seriously pig rich (andyou have a black rear bumper), or...

    you maye have a fuel leak somewhere....

    or you need lighter shoes
    what about highway cruising?
    "I'm a Teaspoon, not a mechanic"
    "There is hardly anything in the world that a man can not make a little worse and sell a little cheaper" - John Ruskin (1819 - 1900)

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  3. #18
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    Quote Originally Posted by EvilJack
    say hello to my little friend...

    ECU Diagnostic Codes

    Trouble Procedures
    These are codes for the 2J

    Are they the same as the 1J for sure?

    i get bang on 16L / 100k's every single time, no matter how i drive nor how much boost i run. I've got that since i put the motor in, even through all my mods it has still remained the same.
    But on the bright side, my N/A 7M used to get 19L / 100k's
    Yep go figure that one out for me and let me know why

    Cheers
    Matty

  4. #19
    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    veilside kit increasing drag?
    "I'm a Teaspoon, not a mechanic"
    "There is hardly anything in the world that a man can not make a little worse and sell a little cheaper" - John Ruskin (1819 - 1900)

    AU$TRALIA... come and stay and PAY and PAY!!! The moral high horse of the world!

  5. #20
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    HAHAHAH it didnt change when the wing or any other bits of the kit were added

    But i'd say extra drag is still there anyways

  6. #21
    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    is that giving it some? what if you drive gently? (grandma style)
    if your AFR's are good everywhere, then it is either heavy car, huge amounts of drag (unlikely ), or right foot behaviour?
    16L/100km on highway is pretty bad... but it depends how fast you are going
    "I'm a Teaspoon, not a mechanic"
    "There is hardly anything in the world that a man can not make a little worse and sell a little cheaper" - John Ruskin (1819 - 1900)

    AU$TRALIA... come and stay and PAY and PAY!!! The moral high horse of the world!

  7. #22
    Junior Member Grease Monkey EvilJack's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    Quote Originally Posted by Wildsupra
    These are codes for the 2J

    Are they the same as the 1J for sure?

    i get bang on 16L / 100k's every single time, no matter how i drive nor how much boost i run. I've got that since i put the motor in, even through all my mods it has still remained the same.
    But on the bright side, my N/A 7M used to get 19L / 100k's
    Yep go figure that one out for me and let me know why

    Cheers
    Matty
    yes they are the same, most codes right through the toyota range mean the same thing

    i do roughly 14L / 100km for normal daily driving and 12L / 100km for highway but then again i dont run an oxy sensor

  8. #23
    Junior Member Backyard Mechanic cptsideways's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    Buy a $20 AFR gauge & wire it in, its easy to spot when it goes open/closed loop. My 1G is open loop to 4k & no boost, then closed loop rich past 4K & any boost.

  9. #24
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    Quote Originally Posted by oldcorollas
    is that giving it some? what if you drive gently? (grandma style)
    if your AFR's are good everywhere, then it is either heavy car, huge amounts of drag (unlikely ), or right foot behaviour?
    16L/100km on highway is pretty bad... but it depends how fast you are going
    Its the same whether im giving it full boot everywhere or goin nanna styles.

    Even let my girl drive it for a week and she got the same as well.

    I know for sure she doesnt rev it to limiter every gear change....like i do, so thats one difference in our style of driving, yet still with the same fuel usage.

    I thought my fuel gauge and odometer must have been connected some how, but now my speedo cable broke and i still seem to use fuel, so no luck there

    Matty

  10. #25
    MR 18RG Chief Engine Builder The Witzl's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    to test if your OXY sensor is actually working (closed loop) whilst in cruise conditions.... hook up an AFR gauge to it - it should swing back and forward from rich to lean
    ...... butt scratcher?!


  11. #26
    regular fella Conversion King chris davey's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    I will add my figures to this thread next Thursday after I have done a 400km round trip

    1280kg helps my cause but 2600rpm at 100kms doesn't compared to everyone with their 3.9:1 diffs! Hoping for 10L/100km
    Quote Originally Posted by MR 1JZ View Post
    that interior is so jap...just looking at it makes me want to kill a whale
    QUICKEST 1JZ'S IN OZ

  12. #27
    Current UZA80 owner Chief Engine Builder JustCallMeOrlando's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    Is that 1280kg with you in it or without?
    Teh UZA80 - Project Century - Remotely p00'd by association

  13. #28
    regular fella Conversion King chris davey's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    that's with my fat ass and a full tank of fuel
    Quote Originally Posted by MR 1JZ View Post
    that interior is so jap...just looking at it makes me want to kill a whale
    QUICKEST 1JZ'S IN OZ

  14. #29
    Current UZA80 owner Chief Engine Builder JustCallMeOrlando's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    Is you a big bastard or a little tacker?
    Teh UZA80 - Project Century - Remotely p00'd by association

  15. #30
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: 1JZ- how to tell it's going into closed loop?

    Quote Originally Posted by JustCallMeFrank
    Is you a big bastard or a little tacker? Aiight
    Fixed!.....
    -Chris | Garage takai - Breaking cars since 1998
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