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Thread: Toyota Corolla 2003 gulps petrol, have tried everything

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    Default Toyota Corolla 2003 gulps petrol, have tried everything

    Hi guys, my Toyota Corolla 2003 EFI Automatic is consuming too much petrol these days (6 km/litre, no CNG installed). I have had the spark plugs replaced, engine tuned, fuerl filter replaced, oil changed at regular intervals, tire pressure is OK but nothing seems to work. Online some people recommend to replace the MAF sensor (which i clean regularly) and the oxygen sensors, and the dealership suggests getting fuel injectors replaced as well. All these repairs cost well above Rs.80,000 which isnt worth it. I am hoping to get parts from eBay or online.

    I am open to suggestions and leads as to where I can get these parts at reasonable prices in Islamabad/Lahore.

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    Quote Originally Posted by rajaatta View Post
    what did they quoted you for the adjustment?
    He quoted 2000 just for AFR

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    Quote Originally Posted by almynoon View Post
    He quoted 2000 just for AFR
    for adjustment or just analysis

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    Quote Originally Posted by rajaatta View Post
    for adjustment or just analysis
    Adjustment

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    Quote Originally Posted by rajaatta View Post
    and what was the procedure of the person's where you get your vehicle fixed?
    I have detailed the procedure earlier in this thread

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    Quote Originally Posted by almynoon View Post
    Adjustment
    too much low peaople only take 3000 for only testing not adjustment.

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    I have a xli 04, 200,000 on the od. apparently, & is gulping too much petrol, rpm is not stable ocasionally. while driving, at times one feels as if the engine is applying a negative force. cleaned the maf sensor (with a carb cleaner, not sure how much damage did it do and how to rectify it), saw much improvement. before cleaning the maf, the car was literally smoking black from the exhaust on petrol.

    ive a cng kit installed.not sure if its interfering. apparently, i think its an afr (oxygen sensor setting) and the maf's issue. how could i know what exactly it is? should i get a computerized tuning? is it worth having? can the afr and maf or whatever sensors control this stuff be configured?

    went to a person who attached some fancy obd (bluetoothed it to his laptop). showed me air flow reading etc etc.. couldn't retrieve the afr and stft ltft stuff. had a throttle body paddle position error. he said i need to change some 'ticky' inside the throttle body. i am having a very poor mileage on petrol. need to fix it. could you please help? i am in lhr, not sure what are the optimum readings of air flow at respective rpms. mine idle rpm fluctuates between 792-1153. he says it should be stable at 850. i badly need help at lahore.

    apologies for bugging though.

    your help would be appreciated.

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    Quote Originally Posted by harris24742 View Post
    I have a xli 04, 200,000 on the od. apparently, & is gulping too much petrol, rpm is not stable ocasionally. while driving, at times one feels as if the engine is applying a negative force. cleaned the maf sensor (with a carb cleaner, not sure how much damage did it do and how to rectify it), saw much improvement. before cleaning the maf, the car was literally smoking black from the exhaust on petrol.

    ive a cng kit installed.not sure if its interfering. apparently, i think its an afr (oxygen sensor setting) and the maf's issue. how could i know what exactly it is? should i get a computerized tuning? is it worth having? can the afr and maf or whatever sensors control this stuff be configured?

    went to a person who attached some fancy obd (bluetoothed it to his laptop). showed me air flow reading etc etc.. couldn't retrieve the afr and stft ltft stuff. had a throttle body paddle position error. he said i need to change some 'ticky' inside the throttle body. i am having a very poor mileage on petrol. need to fix it. could you please help? i am in lhr, not sure what are the optimum readings of air flow at respective rpms. mine idle rpm fluctuates between 792-1153. he says it should be stable at 850. i badly need help at lahore.

    apologies for bugging though.

    your help would be appreciated.
    Check your cars throttle position sensor attached on throttle body.

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    doesnt any PWer has the OBD scanning setup to help fellow PWers for proper diagnosis at least ?
    A Winner Never Quits -- A Quitter Never Wins !!!

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    Quote Originally Posted by almynoon View Post
    Check your cars throttle position sensor attached on throttle body.
    had you adjusted the AFR of your vehicle?

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    Dear harris24742,

    Is your issue still there ?

    For fluctuating RPM, was able to solve by injector cleaning.

    In my case used STP Fuel treatment (avail at most petrol pumps).
    Filled fuel tank, added the STP bottle, and by end of fuel tank, the result was noticeable.
    Only one drawback: the additive impacts Engine oil. Generally suggested to change engine oil, after this treatment.

    Other Option is to Clean Injectors by removing and cleaning on a machine: In Lahore, I know of only one place:
    http://www.fi-tech.yolasite.com/

    Regards.

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    Quote Originally Posted by rajaatta View Post
    had you adjusted the AFR of your vehicle?
    Yes brother. I did adjust my car AFR to 14.7.

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    Quote Originally Posted by almynoon View Post
    Yes brother. I did adjust my car AFR to 14.7.
    mileage response???????????????

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    Quote Originally Posted by rajaatta View Post
    mileage response???????????????
    8-9 local :what:
    14-16 highway. :sly::sly::sly: @ 145-160 km/h on motorway

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    Quote Originally Posted by almynoon View Post
    8-9 local :what:
    14-16 highway. :sly::sly::sly: @ 145-160 km/h on motorway
    what was the average before adjustment and how was the acceleration before and now?

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    This seems to be a success story for the OP. Any place in Lahore where one can get AFR checked/adjusted at reasonable rates? I wonder if this is what i need too for my SE saloon 05 currently giving 7.5 km/l with Ac on in the city.
    Mera dil hay car ka sheehsa
    too hay zalim "gullu butt"

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    Quote Originally Posted by autotranny View Post
    This seems to be a success story for the OP. Any place in Lahore where one can get AFR checked/adjusted at reasonable rates? I wonder if this is what i need too for my SE saloon 05 currently giving 7.5 km/l with Ac on in the city.
    yes in bilal gung arif market the person's from rawalpindi do visit there as well for the lahore customer's you can contact them.

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    Quote Originally Posted by harris24742 View Post
    I have a xli 04, 200,000 on the od. apparently, & is gulping too much petrol, rpm is not stable ocasionally. while driving, at times one feels as if the engine is applying a negative force. cleaned the maf sensor (with a carb cleaner, not sure how much damage did it do and how to rectify it), saw much improvement. before cleaning the maf, the car was literally smoking black from the exhaust on petrol.

    ive a cng kit installed.not sure if its interfering. apparently, i think its an afr (oxygen sensor setting) and the maf's issue. how could i know what exactly it is? should i get a computerized tuning? is it worth having? can the afr and maf or whatever sensors control this stuff be configured?

    went to a person who attached some fancy obd (bluetoothed it to his laptop). showed me air flow reading etc etc.. couldn't retrieve the afr and stft ltft stuff. had a throttle body paddle position error. he said i need to change some 'ticky' inside the throttle body. i am having a very poor mileage on petrol. need to fix it. could you please help? i am in lhr, not sure what are the optimum readings of air flow at respective rpms. mine idle rpm fluctuates between 792-1153. he says it should be stable at 850. i badly need help at lahore.

    apologies for bugging though.

    your help would be appreciated.
    I can help you in Lahore. Shoot a pm if interested
    https://www.facebook.com/OsamaAbbasPhotography

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    How does one aim or adjust corolla headlights? model 2004

    there are two screws on each side. one towards the fender, and the other on the lower side (behind the High beam)

    I need to know as to which screw adjusts what. the direction of the screw/ScrewDRIVER.

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    and btw, my 04 corolla takes a long start. cranks for about 5-7 secs. if i pause and re-crank it, starts normal...

    (apologies for the pathetic phrasing -_- )

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    and btw, my 04 corolla takes a long start. cranks for about 5-7 secs. if i pause and re-crank it, starts normal...(apologies for the pathetic phrasing -_- )

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