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Thread: 1NZFE Poor Mileage/Average

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    Default 1NZFE Poor Mileage/Average

    I installed 1NZFE 1.5 Automatic in my 2003 2.0D Saloon Corolla almost a year ago. The car is giving very poor mileage, I have measured it three times by filling the tank completely and then using the fuel completely, the mileage is 7KM/L Barely (Without AC). I use genuine Oil/Air Filters, change oil after 8000KM, currently using Shell Helix Ultra 5W40(Gray Box), despite spending so much on the car and maintaining it, the car is giving very poor mileage. I need help.


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    check light status? Any abnormal thing other than fuel consumption?

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    I don't know the details but check engine light is not connected, how do I explain.


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    Default

    Nothing abnormal other than fuel consumption.


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    Connect check engine light. Get it scanned through scanner. Most probably ECU is in limp mode or AFR is not set according to factory specs.



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    Oh i hope its properly wired swap. My 7afe is giving me. 14.kmpl local, swapped in 99 corolla but properly wired.
    Speed costs money, how fast can you afford to go.

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    AOA vaqas1.
    i invited PW people to give me suggestions regarding engine swap in my 94 corolla but ended up with no solution.
    i was told that your goodself swap 7afe in your corolla.
    so i want to know your experience about this engine.
    Durability and performance.
    How you find it. please share with me if you like.

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    Default

    Performance is average, mileage of the engine is good of what I'm told which I am not getting due to sensors issue. Engine is economical, bought it for 90k inc wiring and everything and even labour.


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    Default

    Bump.
    Same here. Have 1nzfe installed in my vitz 1999. Getting very poor mileage. Hardly around 8-9km/litre without AC. Everything is fine when connected to a scanner. I don't know where's the problem. That high fuel consumption is frustrating
    Any help/suggest would be highly appreciated

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    @usmanaliawan123

    what happened to ur problem
    Patriotism is when love of your own people comes first; nationalism, when hate for people other than your own comes first.

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    the ecu has to be programmed, take it a fellow who understands these things. Once the ecu gets programmed, and the AFR gets set, only then can you attain the desired ,mileage. What gearbox has been mated with it?

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    Quote Originally Posted by dayrider View Post
    the ecu has to be programmed, take it a fellow who understands these things. Once the ecu gets programmed, and the AFR gets set, only then can you attain the desired ,mileage. What gearbox has been mated with it?
    Gearbox that was used in 2006-08 Corolla Altis.


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    Quote Originally Posted by brownrose78 View Post
    @usmanaliawan123

    what happened to ur problem
    Still same issue, Avg is down to 6Km/L on HOBC. Believe it or not.


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    Quote Originally Posted by usmanaliawan123 View Post
    Still same issue, Avg is down to 6Km/L on HOBC. Believe it or not.


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    What city are you in

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    Quote Originally Posted by dayrider View Post
    What city are you in

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    Lahore


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    I know people in Islamabad that might fix the issue. But what you do need is to program the ecu

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    Quote Originally Posted by usmanaliawan123 View Post
    Lahore


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    Get the o2 sensors checked, also have you connected the exhaust system from the same vehicle that you got the engine, because CATS can also effect mileage

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    Quote Originally Posted by dayrider View Post
    Get the o2 sensors checked, also have you connected the exhaust system from the same vehicle that you got the engine, because CATS can also effect mileage

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    Need someone who can fix the issue in Lahore.


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    Quote Originally Posted by usmanaliawan123 View Post
    Need someone who can fix the issue in Lahore.


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    Go to the fellow who did the swap and ask him to. If not, go to INH, I hear that they are quite advanced technologically

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    Quote Originally Posted by dayrider View Post
    Go to the fellow who did the swap and ask him to. If not, go to INH, I hear that they are quite advanced technologically

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    Who or what is INH?


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