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Thread: Liana Cng / ECU Problem

  1. #1
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    Default Liana on Cng bogs down / 3s diagnostics = ECU Problem

    Just bought a Liana. Had an issue with its FF CNG... on cng its rpm was fluctuating while idling and as it moved it had jerks ...

    After one or 2 days The car started bogging down as soon as it switched to CNG.... What i could do .. I did! That includes
    a. Checked its cng filter, found it Ok.
    b. Drained oil thru drain nut (very small quantity)
    c. Opened the kit(i think its called reducer) and cleaned it from oil traces

    Then sent it to SUZUKI M.WAYS sh.E.FAISAL. They have diagnosed that ECU is faulty and responsible for this erratic behaviour.
    As per them, ECU is not properly sending the signals out. As a proof they say that they have checked the car with other ECU that worked fine.
    Car is OK on petrol.

    Kind advice of PWs is requested.. What should i do??


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    Sumbody help me

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    Quote Originally Posted by mirzaa View Post
    Sumbody help me
    i think u have to buy a new cng ECU ....

    wat is the milage of the car ? me too have cng (ff) liana 2007 i have driven 112k b t w my car is also gives jerks on cng at 2 gear .....but idle is normal never fluctuates ...but now after 112k my car desperately need the tappet (shims) job to be done....
    vtec roxx!!!!!

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    Default

    bro come n also join LIANA OWNERS FAN CLUB
    vtec roxx!!!!!

  5. #5
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    Quote Originally Posted by RL589 View Post
    bro come n also join LIANA OWNERS FAN CLUB
    if the ecu works fine on petrol then why the hey is it now working fine on cng? why does this poor guy have to get one only for cng???
    "A government that robs Peter to pay Paul can always depend on the support of Paul. "If at first you don't succeed, failure may be your style."

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    Quote Originally Posted by CarSaaz View Post
    if the ecu works fine on petrol then why the hey is it now working fine on cng? why does this poor guy have to get one only for cng???
    I have placed my problem in the august hall of https://www.pakwheels.com/forums/whe...s-fan-club-134
    please respond if you can be of any help

  7. #7
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    wish i could im not technically sound
    "A government that robs Peter to pay Paul can always depend on the support of Paul. "If at first you don't succeed, failure may be your style."

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    if ever the problem is with ecu, get it remapped (reprogramming). mechanics usually don't know about software related issues, because that can be tested only by connecting ecu to computer or lpg tunner.

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