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Thread: Honda City RPM Problem...

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    Default Honda City RPM Problem...

    Guys...

    City 2005 Manual, mileage 185000Km.

    when i turn ac RPM goes dead and engine vibrates, all kind of service has been done, tuning, tapit, Th-body, my machanic cant fix this problem... plz help.

    should i change the complete throttle body...? or anything extra, plzz help because weather is too hot......


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    Default

    not sure if the AC runs on Vacuum or is controlled through the ecu
    but y dont u take it to honda pit stop?i am sure its a minor tweak which ur mechanic is unable to trace
    Life is short and very unpredictable just like a Quarter mile .....

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    i took it in SAQIB AUTOS HONDA PIT SHOP in Malir, he also failed to solved the problem...

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    did they service the iddle air control valve ?
    Life is short and very unpredictable just like a Quarter mile .....

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    yes...

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    even my g15 cultus is doing this,one electrician said its an ECU problem i dont believe him,what could be the problem?

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    also get alternator checked
    Life is short and very unpredictable just like a Quarter mile .....

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    seems lyk an ecu problem!
    "The world ain't all sunshine and rainbows. It's a very ruff, mean place, and no matter how tuff you think you are, it will always bring you to your knees and keep you there permanently if you let it.You or nobody ain't never gonna hit as hard as life, but it ain't about how hard you hit, it's about how hard you can get hit and keep moving forward, how much you can take and keep moving forward. If you know what you're worth, go out and get what you're worth, but you gotta be willing to take the hit."
    - Sylvester Stallone

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    experts plzz tell me the solution...

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    I don't know if it will work for all other Hondas but it worked for me like a charm.

    A few weeks ago I serviced my whole car which was long overdue, Engine and transmission oil change, Filters, Valve adjustments, TB clean up, IACV, Plugs and Wires, Distributor cap etc, Pretty much everything.
    (Car in question is a 88 civic with a swapped D15b "3 Stage Vtec")

    But just as I was happy that the car was as good as new the Idle after the first few start ups went crazy it would stay up at 3 to 4K sometimes even jumping to 5K then at times it would just come down and stall altogether.
    Safe to say I wasn't happy after spending so much and then getting these results but I did some online research and resorted to Honda Manuals which clearly states to Reset the ECU after such a major tune up specially when the TB is taken off and cleaned up also I came to know that a Vacuum leak in the intake system no matter how small would have noticeable impact on idle position and overall performance.

    The procedure to reset the ECU in the manual was neatly laid out but was a bit too much precise for my lazy mood so what I did was take out the battery for the night and put it back in the morning, The car also had a vacuum leak in between the TB and the intake manifold where a small pipe connecting the two was missing, got that fixed started the car up and noticed it idled quite normal than before but it wasn't 100 Percent, So as stated in the manual took it out and drove for about 4 to 5 Km and everything was back to normal the car idled between 7 to 800 rpm on operating temperature and bit higher when load is put on, The cold startups in the morning have also improved alot.

    So if you haven't done this already give it a try it worked for me and it seems like you have pretty much the same problem and since your problem is related to AC do check carefully for vacuum leaks which most likely seems the case. Also do remember that you need to run the car on petrol to reset the ECU and drive it so it can relearn the settings and once everything is done you can switch back to CNG.

    Apologies for all the long info but it seemed like the alot of people have these idle issues and sometimes there is a simple and inexpensive solution that people aren't aware of.
    My 4th Gen HONDA Its............... White(CIvIC Si),

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    if i remove the battery wires for a night, then ECU will be restarted ??????

    my car was stood in workshop 3 4 days without battery, because engine overhaul, when car started i drive it in petrol 3 days and spent 3000 petrol on it, and then i converted to CNG, but my problem stays there as well...

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    I am not sure if in your car it will do the trick since your is car isn't tampered with much and is wired from the factory while mine was swapped with an EFi engine and wired later.

    If you have the owner manual you can look up the proper way of resetting the ECU on your car or if you don't then maybe any reputable Honda 3S workshop can guide you but like I mentioned, Do check very carefully for vacuum leaks too because they can greatly affect idling performance.
    My 4th Gen HONDA Its............... White(CIvIC Si),

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    guys i need your help and expert opinion..i have honda city 2005 vario(Automatic) with cvt gears... i am facing problem that when i drive the car about 1500 rpm it starts jerking ..more like pulsing movement as something is related to engine because gears are smooth and without any noise..and yes i have heard misfire (two times) from exhaust also.
    plz help ...

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    Quote Originally Posted by jAzZy_Bhai View Post
    if i remove the battery wires for a night, then ECU will be restarted ??????

    my car was stood in workshop 3 4 days without battery, because engine overhaul, when car started i drive it in petrol 3 days and spent 3000 petrol on it, and then i converted to CNG, but my problem stays there as well...
    There is a simple switch which keeps the RPM at 800 irrespective of idle whenever the AC is turned on.

    Is that AC switch working properly ?
    All life is an experiment. The more experiments you make the better.

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    I had the exact same problem,and once i had my radiator serviced,all problem solved
    Do it and u will be surprised.i also used to do all the things u have already done
    {{((( Impossible it self says 'I' 'm' 'possible' ))}}}
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