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Thread: corolla xli 2009 performance and petrol mileage

  1. #1
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    Tooth_mekanik's Avatar
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    Default corolla xli 2009 performance and petrol mileage

    dear pakwheelers AoA ! I bought a 2009 xli some 2 months ago, driven 47 k. My first observation was that its a relatively new car it should perform better than my previous car, a 95 stock civic and boy was i disappointed or wot. Anyways i changed the fuel filter, the oil filter, the air filter and put in petromin sahara synthetic oil, i also upgraded to denso irridium spark plugs, the result , pick up became much smoother and an average mileage increase of around 2 km/liter, the toyota guys also did some manual tuning(i dont really know wot actually they dis besides cleaning the stuff).
    I just made a round trip peshwr-islmbd-nathiagali-islmbd and peshawar, here are a few things i noted
    1. The mileage i get in city is almost the same on motorway.avg speed 115 kph.
    2. There is alot of knoking between 110 and 120.
    3. Just like my cng civic there is a loss of speed even on small steep patches of motorway.
    4. Somehow other gli/xli rollas seemed to have more power, especially on way to muree etc.
    5. With three people on board i could tell that its going to max out to 140 kph maximum.
    6. The rpm at 110 is 3.5 and engine seems to be in overdrive mode.
    So i basically wanted to ask if this was normal or my car is underperforming ? If its normal, then i am 1 disappointed rolla owner


  2. #21
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    lol..silly me...tell me the 3s guys can replace my cars exhaust piping et al...what was i even thinking, but then wot can u do other than being played at the hands of these half baked mechanix, i was so depressed with the underperformance issue that i didnt even think twice, anyways can u guide me on how to go abt it ? Should i go ahead with the injection cleaning , help me as i am helpless in the face of toyota people who tell me, its fine, when it clearly isnt.
    we all live in trenches but there are those who look at stars.

  3. #22
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    Default

    1. look for signs of engine wear. eg, consuming engine oil, smoke on first start in morning, hard cold starting etc etc.

    2. use liqui moly injector cleaner and engine flush for slightly prolonged duration. after treatments change engine oil, oil filter, fuel filter, clean out the filter sock on the fuel pump if it has it (inside the fuel tank i think). I had a problem almost like yours in my 1.5L 95 corolla and it turned out to be fuel supply issue - clogged up sock filter in the fuel tank.

    3. flush out the radiator and fill it with proper coolant, low level or water only will cause gaseous areas to form and will mess up engine temp. readings that the ecu uses.

    And most imp, post here what you've done and what the result was. if anyone has a similar problem then they may benefit from it too...
    Selling Vitz+local cars - compatible bluetooth Ecu Scantool, High-amp car chargers, Apple-certified Lightning Cables, etc. Click on my name and see my started threads for details.

  4. #23
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    @ ahsan, thnks and yea sure bro will keep the thread updated with any steps id be taking to rectify the problem.
    we all live in trenches but there are those who look at stars.

  5. #24
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    zohaib khana mara your car is fine, xli is underpowered and that is that, cng was never installed in your car .... shak mat kar yarr

  6. #25
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    and what you did to your exhaust was not very hmmmm good ... if you think it is underpowered just sell it and buy a reborn ...

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    Dude There is something seriously wrong with your car....
    I used to drive honda city on motorway and 140k was nothing for it with 5 passengers...
    Even my Mehran goes to 140k with four passengers....
    You need to check your car....
    There is something wrong with it or you need to learn how to take cars at high speed....

  8. #27
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    i have xli 2010 model and i have done 160+ soo many times on cng with 4 passengers..

    kindly tell me what is ur odo reading and how many kms u have done on cng..

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