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Thread: CNG Prob with Cultus VXRi

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    shahzadmunir's Avatar
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    Unhappy CNG Prob with Cultus VXRi

    hi

    I have cultus VXRi 2007 with EFI. It's having a strange problem. When on CNG, its RPM starts fluctuating(it goes down/up), on petrol and in speed (in high RPM) there's no problem and it goes on quite fine. but as soon as i slow it down and press the clutch it fluctuates severly or goes off.

    Sometimes after 10/12 KMs, it gets OK and there's no such prob. But now this happens very rarely that it becomes OK.

    I repeat there's not problem when car is in speed or on petrol. Plugs are fine, filter is find, just got oil changed and mechanic checked tappets and said they are in fine position.

    I visited a CNG experts, they said I would have to get it fixed from Suzuki using computer, I went to Ali Jan Motors service center, they just over-wrote ECU parameters and said it's done. But problem didnt get resolved. Their CNG specialist was on leave and they said get it checked by some CNG expert. I think they attached laptop wire with ECU only and did'nt check it using OBD DLC.

    I am really frustrated now. Failed to understand where to go.

    Any suggestions?


  2. #21
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    Default Hasham Ghayas

    I have a same when apply clutch car stalls or rpm down to zero then came back to normal. i visited Suzuki Margalla Motors 5/6 times, all the time they reset ecu and cng setting though software and adjustment but problem did not solved.
    Finally they removed stepper motor and installed manual T, until now car working fine now there is no issue of rpm down.

  3. #22
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    Default

    please check the below issue arise in my cultus efi on cng i hope u are discussing about the same issue ... if someone found the cure to it please guide me accordingly

    Cultus EFI on CNG, high rpm issue - Video Dailymotion

  4. #23
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    Default

    Quote Originally Posted by schehxad View Post
    dear pw fellows so its obvious ... i have heared from many ppl n dealers n especially cultus owners ...carborator cultus is faaar better than efi cultus...
    it seems that whenever suzuki introduces electronics in there units... it creates great problems for suzuki owner/customers are concerned...n effects realibility and sales of suzuki.......example is liana and now cultus efi...initially boost sale coz name of suzuki cheapness market monopoly n then all shattered due to ppl/dealers/owners response...isnt so...?
    who all second me?


    Stepper motor some times need replacement its original suzuki cost is 3500 i changed it had RPM dropping serious issue plug plugs and wires also changed cost 8500

    but dear stepper motor adjust your timing and fuel consumption in different weather conditions and on different road condition ............. when u go to high hilli areas simple corborator has fix setting it will use more fuel and give less pick ...................... here stepper motor do the magic it automatically adjust according to Oxygen, air , load on engine, radiator and current condition ............................ and give u the best adjustment and ur car will be most effecient in all weather and all type of road conditions.

    remove stepper motor and doing T shap cabla etc ................... u actually disconnect EFI function its useless than its better to buy old corborator car

    isses need to be resolved with genien parts installation and you wouldnt have problems

  5. #24
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    Default

    i have the same problem in car to

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