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Thread: Urgent: City IDSI unstable RPM on CNG

  1. #1
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    Default Urgent: City IDSI unstable RPM on CNG

    My city 2007 giving problem on CNG. RPM fluctuates between 500-1000.

    Every thing on petrol is fine except little long self start.

    Today took the car to workshop where Throttle body was cleaned. Mechanic adjusted a sensor (may be TPS) by loosing two screws connecting the sensor with throttle body. He also adjusted CNG kit but could not get any fruitful result.

    Can anybody identify the problem or share with me if had same experience with his car?
    FX86 =>Mehran98=>Santro03=>Baleno04=>City07=>Xli05
    86-01=> 01-04 => 04=07 =>07=08 =>08-11 =>11

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    Did you change the air filter ?
    Hows the air intake blocked ? with tape or with proper air blocker ?

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    Default

    if the car is not showing this problem on petrol why did u even let them fiddle with car electronics :|
    sounds like a cng kit problem, has to be opened up and checked for diaphram etc
    Life is short and very unpredictable just like a Quarter mile .....

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    @ c123pk
    Air Filter is almost new (100 Kms old) There is no added blockage etc on air intake.

    @hash4u
    The guy was 100% sure that it was due to dirty Throttle body and TPS sensor
    FX86 =>Mehran98=>Santro03=>Baleno04=>City07=>Xli05
    86-01=> 01-04 => 04=07 =>07=08 =>08-11 =>11

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    Default

    Issue Resolved

    Problem with low pressure value of CNG Kit.

    Diagnosed and fixed by by Rizwan CNG.

    Also connected Oxygen Sensor wires.. No more check engine light.

    CNG Average surprisingly improved. 130 KM done and 2nd green light went off. In the light of past experience, I expect it will do around 160 KM (Local) on 55 L cylinder Inshallah.
    FX86 =>Mehran98=>Santro03=>Baleno04=>City07=>Xli05
    86-01=> 01-04 => 04=07 =>07=08 =>08-11 =>11

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    Rola hao oxygen device meri bhe lagi hui hai ... rola he hai ... per agar tuning hui ho meri gari 175 km deti hai motorway pe with ac ... khair still cng is rola ...
    Levels are not achievd but levels are created...

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