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Thread: Low Mileage Honda City 2007

  1. #1
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    Default Low Mileage Honda City 2007

    My Honda City 2007 (petrol only) has started giving some very strange numbers in mileage. The last three times I checked, it gave me 330km per 40 litres, on average it's about 7km per litre. I've had the oil changed and my car is tuned up monthly. Can anyone shed some light on this?


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    Get ur Car inspection done from Honda.....Tell them the old milage and new milage ur getting. ...Hope they find out the prob!

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    if equipped with oxygen sensor then it is busted your car afr will be running insanly rich ..

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    I got the oxygen sensor replaced. Nothing changed.

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    And which Honda should I take it to? I live in Karachi.

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    <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <wunctuationKerning/> <w:ValidateAgainstSchemas/> <waveIfXMLInvalid>false</waveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <woNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables/> <wnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <wontGrowAutofit/> <wplitPgBreakAndParaMark/> <wontVertAlignCellWithSp/> <wontBreakConstrainedForcedTables/> <wontVertAlignInTxbx/> <w:Word11KerningPairs/> <w:CachedColBalance/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math"/> <m:brkBin m:val="before"/> <m:brkBinSub m:val="--"/> <m:smallFrac m:val="off"/> <m:dispDef/> <m:lMargin m:val="0"/> <m:rMargin m:val="0"/> <m:defJc m:val="centerGroup"/> <m:wrapIndent m:val="1440"/> <m:intLim m:val="subSup"/> <m:naryLim m:val="undOvr"/> </m:mathPr></w:WordDocument> </xml><![endif]--> I was experiencing the same issue with iDSi on petrol, then I went ahead, removed throttle body, cleaned it since it was already out, removed intake manifold and cleaned it, removed individual injectors and they were badly clogged with 110,000 km on clock, got it cleaned and reinstalled it back and got the tappet adjusted since it was easy as everything was already removed.

    Your real issue is clogged injectors but you can get all other things serviced along as these things have to be removed in-order to gain access to injectors so why not service them as well.

    People ignore this service on this vehicle because access to it is not as straight forward on this vehicle and that people have little idea about this important service.

    I am very positive that this will solve your problem. Remember, this will get clogged again soon if you don’t replace the fuel filter along.
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    Dear khanception

    i'd like to suggest u, to change your water coolant sensor may be it has disturbed air fuel mixture ratio, and also change your coils, may be coils have been weak and leaking of current putting more load on engine to run, that's why taking more fuel to run on required speed............
    check and reply..........

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    Quote Originally Posted by engineer_shazz View Post
    Dear khanception

    i'd like to suggest u, to change your water coolant sensor may be it has disturbed air fuel mixture ratio, and also change your coils, may be coils have been weak and leaking of current putting more load on engine to run, that's why taking more fuel to run on required speed............
    check and reply..........
    Water coolant sensor is not blindly changed, OBD test gives very good values for OBD temperature sensor at start and once car is heated up. So one exactly knows if it requires changing or not.

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    Quote Originally Posted by talhawaleed View Post
    Water coolant sensor is not blindly changed, OBD test gives very good values for OBD temperature sensor at start and once car is heated up. So one exactly knows if it requires changing or not.
    do you know, what exactly the purpose of water coolant sensor n how does it work ???

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    Quote Originally Posted by engineer_shazz View Post
    do you know, what exactly the purpose of water coolant sensor n how does it work ???
    Coolant temperature sensor acts as a feedback sensor for Air to Fuel Ratio, once it measures low coolant temperature then car runs rich till the time it does not attains the proper operating temperature. This sensor rarely goes bad and can be cross verified though OBD test. If thermostat valve is removed then that can also contribute to rich Air to Fuel mixture.

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    nice, you know it..........good

    but OBD test wont let you know that sensor has been weak and sending wrong data, and has been 1 of the reason for getting more fuel,

    hope now you hv got my point, what i exactly wanted to say in previous post...........

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    Quote Originally Posted by engineer_shazz View Post
    nice, you know it..........good

    but OBD test wont let you know that sensor has been weak and sending wrong data, and has been 1 of the reason for getting more fuel,

    hope now you hv got my point, what i exactly wanted to say in previous post...........
    Yes it does reads data from Coolant Temperature sensor, as I have got EML327 and vehicle in hand corolla 07 was unstable on cold start up on petrol. In-order to sort out the problem, I had to test various sensors and among them, one was coolant temperature sensor. It showed variation in temperature starting from 20 C till 87 C that’s how I figured out that issue was not with coolant temperature sensor. If you got Android phone the download OBD Car Doctor and it almost gives reading against every sensor attached with the vehicle with proper unit.

    In this case, you can very easily make a comparison between expected value and measured reading in-order to justify your conclusion.

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