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Thread: Please solve my problem - Vitz OverDrive

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    Default Please solve my problem - Vitz OverDrive

    Please solve my problem - Vitz OverDrive -73677

    Please tell me wht is this O/D OFF and the icon showing next to it ...
    Please solve my problem - Vitz OverDrive -73677


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    O/D Stands for Over Drive.

    If suppose your car has 4 forward gears, turning the O/D off will essentially make your car have 3 forward gears, in other words it won't shift to the 4th gear.

    Over Drive is for better mileage.Keep it on mostly.

    The button for O/D is on the gear lever(its a small button).

    The icon/light next to it is the check engine light.If this remains on after starting your car, then there is something wrong with your car(doesn't have to be anything serious) and you need to get it check via a dignostic reader.
    Trolls EDPP

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    momin you are telling the story other way arround
    When you are using automatic transmission, the ecu controls how your gears are changed, and how much your engine revs at certain gears. This is the normal mode when OD is at off stage
    When you need the car to accelerate sharply you push the overdrive button and the ecu turn on sort of a sport mode, by which your engine revs up more with in gear changes giving you a huge acceleration benefit though hitting on fuel economy.
    If you want to try it out. Go to an open road move your car to a high steady speed. now press the OD button on the gear level and you will feel your car accelerate very quickly.
    The JuGnO of Isb -- a ToucH of ElegancE and ExcellencE
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    Default

    Momin: 1
    Jugno: 0

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    Quote Originally Posted by JuGnO View Post
    momin you are telling the story other way arround
    When you are using automatic transmission, the ecu controls how your gears are changed, and how much your engine revs at certain gears. This is the normal mode when OD is at off stage
    When you need the car to accelerate sharply you push the overdrive button and the ecu turn on sort of a sport mode, by which your engine revs up more with in gear changes giving you a huge acceleration benefit though hitting on fuel economy.
    If you want to try it out. Go to an open road move your car to a high steady speed. now press the OD button on the gear level and you will feel your car accelerate very quickly.
    You just confirmed what I wrote.

    When you down shift to a lower gear, car accelerates doesn't it? It does.

    If you're in top gear and you hit the O/D button to turn O/D off, the car will down shift to one gear lower, which will cause acceleration.

    Your explanation for the purpose is inaccurate.
    Trolls EDPP

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    Totally agree with MominHaq
    PAKISTAN ZINDABAD

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    bhai koi mujhe yeh batayega k yeh kahan se sahi karaon aur ODI k barabar mein jo icon araha hia woh kabhi khabar ata hia leken ab regularly anay laga hia chalne k thori dair k baad ... from where should i solve this problem

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    Default O/D Problem sovle

    You can repair from Faisalabad, Ashafaq Electroincs and car A.C
    0300950835, 03217666688

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    visit a good mechanic and get it checked, shamim workshop is good for this job they got all the equipments, and will do the ecu reading in 500/- to figure out the problem,
    I appreciate a good body regardless of the make

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    Quote Originally Posted by tarryq1 View Post
    You can repair from Faisalabad, Ashafaq Electroincs and car A.C
    0300950835, 03217666688
    the poster is in KHI, i doubt he'll drive to faisalabad to get he car fixed.

    @poster
    contact alta on 03332135567, he'll be able to guide you to a good mechanic in KHI.
    1. A car is only worth what someone is willing to pay for it, 2. Resale wont save your life in an accident, 3. Genius has limits, stupidity has none, 4. Never argue with an idiot, they will bring you down to their level & beat you with experience, 5. Growing old beats the alternative -- dying young! 6. انّا للہ و انّا الیہ راجعون

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    Quote Originally Posted by MominHaq View Post
    If suppose your car has 4 forward gears, turning the O/D off will essentially make your car have 3 forward gears, in other words it won't shift to the 4th gear.

    Quote Originally Posted by MominHaq View Post
    Over Drive is for better mileage.Keep it on mostly.
    I was replying to these two statements specifically

    in the first statement, You are saying that the car does not go to 4th gear while in OD mode, as far as my knowledge is, this is not true

    in 2nd you saying OD is for better mileage meaning that when OD is turned ON it will get better mileage and i was disagreeing to that, as when in high rev mode the engine uses more fuel and is therefore less economical.

    and i did not understood what are you saying about my explanation being inaccurate for the purpose?
    The JuGnO of Isb -- a ToucH of ElegancE and ExcellencE
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    here is a how to things works article (though i read it after posting my reply in this thread )

    HowStuffWorks "Overdrive"

    After reading this article i am thinking on rephrasing my words
    The JuGnO of Isb -- a ToucH of ElegancE and ExcellencE
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    imported cars ........sensors ...... CNG.........

    problems unlimited ...................................
    http://www.pakwheels.com/forums/members-member-rides/266031-accord7362s-merc-thanks-god-loved-ones-who-remember-me-prayers ,199119-thanks-god-2011-ford-edge-limited-awd-3-5-v6

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    Quote Originally Posted by JuGnO View Post
    I was replying to these two statements specifically

    in the first statement, You are saying that the car does not go to 4th gear while in OD mode, as far as my knowledge is, this is not true

    in 2nd you saying OD is for better mileage meaning that when OD is turned ON it will get better mileage and i was disagreeing to that, as when in high rev mode the engine uses more fuel and is therefore less economical.

    and i did not understood what are you saying about my explanation being inaccurate for the purpose?
    1. LOL, you misread what I wrote even though you quoted it.

    I did not say that when O/D is on, car won't go in 4th, I said the opposite.Please read it once again.

    2. Please read this carefully this time, O/D on will let the car shift to its highest gear thereby improving fuel economy. O/D off will NOT let it shift to the highest gear.
    Trolls EDPP

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    haha momin, sorry for misreading it but still its incorrect , and now i am thinking that you are totally incorrect haha

    well i was thinking on my home (my last post was from office) that our statements, both yours and mine are slightly miss leading.

    let me explain the whole system again from start... and i think momin will agree to me doing it
    The JuGnO of Isb -- a ToucH of ElegancE and ExcellencE
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    Lets Leave The O/D Issue To Momin And Jugnu..
    @Poster: You Running It On CNG? If Yes, Then The Check Engine Light Is Not A Big Deal.. If Not, Then Get It Checked From Toyota Dealer..
    Gari ki deals only on PakWheels!

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    The Poster must be going nuts by now...banging his head against the wall and regretting the moment he posted this query
    A Post-Wh0re is a user who's only aim in life is to increase his post count. He/she gets off by receiving likes and mentions, and considers his post count a medal on his skinny chest. A post-Wh0re is the human equivalent of Chihuahua..bickering pointlessly, effortlessly, permanently.

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    Default Overdrive function explained or rather re-explained

    Well i think we should break the functionality of the OD function in two aspects.
    one being fuel economy and the second being the acceleration

    and before addressing both these issues lets understand what actually happens in overdrive mode
    in very simple terms, when we turn the overdrive mode ON the automatic transmission is locked to give a specific gear ratio that is lower than 1:1. In explanation i would say it become like the engine input gear is larger than the transmission gear size. (anyone who has seen the gears on bicycles can relate to that very easily)
    thus making it less power in and more power out.

    Now lets relate this to the acceleration part. When we are running in OD OFF mode the transmission is generally at a gear ratio up to 1:1. Now lets say that we are moving at an RMP of 3000. At this point if we turn the OD mode ON the applied gear ratio would decrease below 1:1 to about 0.6:1. Thus giving power output equivalent to about 4000 RMP and it will make you accelerate at the same RMP, and help you for example to overtake some one quickly

    Now move towards economy. Let us suppose we are going on a highway and we are moving at a speed of 100 KPH at 3000 RMP. now if we put OD in to ON mode, we can go to 2000 RMP and be at same speed 100 KPH. Thus the engine will be using less fuel and it will be fuel economical while cruising.

    I hope this explanation would have explained to many how and what OD does.

    (the ratios or 0.6:1, the RMP equivalence from 3000 to 4000, the RMP chance from 3000 to 2000 for same speed are supposed for explanation and not accurate) (OD gear ratio of different cars is different)
    The JuGnO of Isb -- a ToucH of ElegancE and ExcellencE
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    Smile

    Quote Originally Posted by bango View Post
    The Poster must be going nuts by now...banging his head against the wall and regretting the moment he posted this query
    nope... wrong... against the keyboard
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    He'd be dead by now, only because of you Jugno. .


    to the poster: If you're alive:

    in SIMPLE words: O/D = OVERDRIVE. IF it is OFF, your car will not engage the OVERDRIVE gear which is FOURTH in your car since your car's transmission is a 4-speed auto. Why do you need to turn it off?

    Here is why:
    You are driving in hilly areas with OD on and your car feels like you're cruising on the motorway and shifts into fourth (OD): your car bogs down.
    So you dont want your car to bog down during a slight uphill, that is why you turn of your OD. after which the fourth gear (OD) stays in peace and your transmission keeps tumbling between 1st, 2nd and 3rd gear as necessary. You still have a choice of limiting the trans further to 1st and 2nd if needed and 1st only if needed which is denoted by 'L' on auto trannies.

    AND UH, if you are driving in a hilly area and feel like your car needs the topgear, which is the fourth gear in your car, you better slow down or you'll fly to india at about 180km/h.


    IN ORDER TO KNOW WHY YOU DON'T need the TOPGEAR during an UPHILL, DONT READ JUGNO's post. ASK AGAIN.

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