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Thread: civic 05, pulsating brakes? (and clutch shrudder)

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    Default civic 05, pulsating brakes? (and clutch shrudder)

    Hi, from past couple of weeks there is a pulsating feeling when i press brake. It is most observable when car is slow and coming to a stop. To explain it more, it is like when i keep constant pressure on brake pedal, the car's deceleration seems to pulsate as wheel is turning.

    6 months ago i got rear brake pads replaced but i think its coming from front because there is no pulsating feeling when i use handbrake.

    I checked the front brake pads and the pads still have considerable material left. The discs seem fine from my eyes... Also whenever i press brake and window is down i can hear a very low sssss sound. it is not squeaking neither it is loud.

    Any ideas what to do?


    A side question since i dont want to make another thread. When the car is cold and i am taking off from 0(first gear), the car shudders at the biting point of clutch. The shudder is much more when i am trying to move up an incline. There is no clutch slip at high gears, once fully engaged, it works fine.
    The honda 3s guy told me that it is because clutch plate is bent....
    Is it really that bad? any idea how much will be the cost to fix it?

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    Quote Originally Posted by metalhead View Post
    @HellsGuardian
    The slipping in first gear has happened to me also but mostly on a U-turn. But for me it seems to be the tire slipping. Probably cold tires slip on a cold road without a screech. In a turn, inner tire press less on the road so slips.

    I also notice minute things in my car/bike without distracting my driving...
    May be sometime we can meet.
    Sure lol yes i am curious about things and more like perfectionist. I dont like "not knowing something"
    Plus its a good habit for engineers not to ignore little details :p
    May be Xulfiqar bhai can tell us that is this possible that a car slips clutch only in 1st gear and no slip at all in high gears. All these time i was ignoring my car due to low on pocket lol but i think i can take care of her a bit

    Btw that clutch shudder only happens when engine is cold. Some people says that its the condensation on flywheel so nothing to worry about

    P.s metalhead as in music or cars(metal)?

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    While signing up for PW, may be there was a nerve still pulsating from past listening but i am happy that that nerve has changed its channel... Now it beats with rpm...

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    hahahaha so u were comparing it with other cars
    try civic n then compare hahaha

    if its that big of a "khada" then u should go slow over it, atleast i pass through them very slowly or even at 0 speed, but if u ever own a corolla to phr jis marzi speed se guzar jana unko kuch ni hota haha

    btw r u only concerned wid the sound? pass through it with ur ears closed

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    ^ yar itna bar khada nahi hai. Its more like a sudden drop in surface. Or 1 saal pehle tak ais nahi hota tha.

    Chalo checkup karvata hun na lets see

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    i have a funny update. The car is smooth (soft) on bumps when its loaded (4 people on board)
    @chaudhary9
    i guess you are right lol i am noticing too much. Perhaps all this time i have driven my car on ISB roads but for the past year i go daily to pindi and then comes the metro so its not the car's fault

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    put another cylinder in the trunk, it'll stay soft on bumps then

    car noises/sounds is also one music lol, but when i turn on car sound system then all that gets suppressed hahaha

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    Another reason is temperature. In cold season the suspension is harder relative to warm conditions.

    Thand main tau insaan kay jorr bhi kam chhorr detay hai

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    there r some sounds coming from my car too
    maybe shock or bush
    but there's another sound that comes on smooth roads only
    so i couldnt show that sound to akaash :/
    will ask him to check today again

    did u got ur car checked?

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    got it checked today
    shock mounts need to be changed, esp the left one
    as for shocks he said once we open it then we'll know
    bush r all fine though
    rear shocks r bit weak but they can still run fine

    as for that sound on smooth road, even he couldnt hear it lol
    i guess its just me or perhaps u'll notice since u notice alot of stuff

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    Quote Originally Posted by chaudhary9 View Post
    got it checked today
    shock mounts need to be changed, esp the left one
    as for shocks he said once we open it then we'll know
    bush r all fine though
    rear shocks r bit weak but they can still run fine

    as for that sound on smooth road, even he couldnt hear it lol
    i guess its just me or perhaps u'll notice since u notice alot of stuff
    i couldnt get the time to visit him or nazir. Yup he said me the same that exact condition can only be evaluated once shocks are open. Btw how he checked shock mounts?

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    Quote Originally Posted by HellsGuardian View Post
    i couldnt get the time to visit him or nazir. Yup he said me the same that exact condition can only be evaluated once shocks are open. Btw how he checked shock mounts?
    turned the wheels at both sides n then with his mobile torch
    he told me about mounts before as well
    then took a test drive, there was alot of sound at left side then he asked some1 to drive car backward n forward just a little n looked at the shock mount to confirm, even i saw it too, then he showed that look its moving freely, right was loose
    he had one kabli one, he showed that they should be tight like this

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    yar my car is throwing a lot of smell from exhaust. Especially when its cold. Even in open air, you cannot stand close to car because of smell. It feels like its unburnt fuel (may be carbon monoxide obviously i dont know it smells like lol)
    As far as i know, if emissions of the car are high, the engine should record an event (check light) but aisa kuch nahi ho raha mere case men.

    Aqash keh raha tha abhi or chalaen may be thek ho jae par khud se kabhi kuch thek hua hai? I somehow want to identify if it really is a problem and the reason for it

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    so u basically start ur car n stand behind it to see if there's any smell coming?
    even i take out my car n close the gate n come back passing from rear but still there was no smell

    maybe its unburnt fuel that car is throwing out, that must be him being optimistic
    did u got it checked from honda 3s? what did they said? ask them y cant they find the issue, what good r they then hahaha

    u wanna smell exhaust of my car?

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    Quote Originally Posted by chaudhary9 View Post
    so u basically start ur car n stand behind it to see if there's any smell coming?
    even i take out my car n close the gate n come back passing from rear but still there was no smell

    maybe its unburnt fuel that car is throwing out, that must be him being optimistic
    did u got it checked from honda 3s? what did they said? ask them y cant they find the issue, what good r they then hahaha

    u wanna smell exhaust of my car?
    Lol no need to stand behind it. E.g if i dont open the gate of my garage and car is idling (warm-up) then you can sense the smell at the rear.

    3s walon ne hi to kaha tha throttle body service karvaen. Time nahi mil raha warna dubara chala jaun k bhai ab to throttle body bhi ho gai wiring bhi original or kya chahte ho?

    Haha that will be the last resort

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    A little smell during fast idle (warm-up time) is normal as the fuel is kept rich just as in choke feature of carby setups. But after warm-up if there is considerable smell, then the fuel mixture is not right.

    Do you have oxygen sensor in exhaust? If yes, check for its operation. Faulty oxygen sensors disturb the fuel mixture.
    If no oxygen sensor, the mixture is set by a fuel-trim pot under the dash. I will suggest not to touch it unless its done already or unless everything else (injectors, ignition and valve timing, fuel pressure, ecu relearning, etc.) is as per factory specs. For its setting exhaust gas analyzer is a must, I believe.

    I also feel the smell but only during fast-idle when i am at the back of the car.

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    Quote Originally Posted by metalhead View Post
    A little smell during fast idle (warm-up time) is normal as the fuel is kept rich just as in choke feature of carby setups. But after warm-up if there is considerable smell, then the fuel mixture is not right.

    Do you have oxygen sensor in exhaust? If yes, check for its operation. Faulty oxygen sensors disturb the fuel mixture.
    If no oxygen sensor, the mixture is set by a fuel-trim pot under the dash. I will suggest not to touch it unless its done already or unless everything else (injectors, ignition and valve timing, fuel pressure, ecu relearning, etc.) is as per factory specs. For its setting exhaust gas analyzer is a must, I believe.

    I also feel the smell but only during fast-idle when i am at the back of the car.
    Glad to STILL have an expert on PW because techie-pw'ers are not active much these days

    Ok i will test when i return home (i.e 45mins of driving so should engine should be fully warmed up)

    Afaik No oxygen sensor in this model of civic. I have no idea about POT. The only time car has been to local mechanic is when cng was installed... Well so far i have only ruled out ECU re-learning so other 4 parameters are still possible suspect.

    In G-10 there is an enercon shop which has exhaust probe and other stuff like that which analyses the gas level, may be i should visit them first before getting into the engine components.

    Just a thought (i might be wrong), when i did ecu re-learn, the air filter was new (2 day old (throttle body serviced too) ) but as the filter gets old, it gets clogged and hence the air flow is reduced. BUT the settings saved in ECU are when the air-flow was higher. Could it be that ecu is sending more fuel because of saved values but in real the air is less so the fuel is not burning completely?
    This whole theory can be thrown away if ecu keeps learning values in real time

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    about that pot thing yup it is there in dash reachable by opening glove compartment, enercon people adjust it if u ask them to do petrol setting, there's a screw there used for proper fuel adjustment though even for just this much they will charge 400rs
    but i guess ur problem may get resolved then

    btw does ur steering feels kind of soft at 120 or above

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    Quote Originally Posted by chaudhary9 View Post
    about that pot thing yup it is there in dash reachable by opening glove compartment, enercon people adjust it if u ask them to do petrol setting, there's a screw there used for proper fuel adjustment though even for just this much they will charge 400rs
    but i guess ur problem may get resolved then

    btw does ur steering feels kind of soft at 120 or above

    Sent from my GT-I9500 using PW Forums mobile app
    yar yes at high speed it is soft but i think pehle bhi aisa hi tha. I am not feeling any difference in before and after replacing feels. Low speed pe pehle bhi thora hard tha ab bhi hard hai. or high pe soft

    400 is not much yar, after all they have got a specialized equipment POT adjust karvaya na karvaya but at least test to ho jaega k waqae emissions kharab han k nahi

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    after replacing feels? what is that?
    so like i suspected its normal with this car, some1 else also said the same thing, it does gets soft after 120, tab hi dar b zaida lagta hai hahaha
    whenever i reach that speed it feels so soft k thora sa hila to lane change ho jani hai haha

    they have same equipment as they had before n they used to charge 100-200rs now they got 2 shops instead of one so extra 200-300 is for that

    u can go there anytime, there used to be rush there cng was available, now there isnt much


    Quote Originally Posted by HellsGuardian View Post
    Lol no need to stand behind it. E.g if i dont open the gate of my garage and car is idling (warm-up) then you can sense the smell at the rear.

    3s walon ne hi to kaha tha throttle body service karvaen. Time nahi mil raha warna dubara chala jaun k bhai ab to throttle body bhi ho gai wiring bhi original or kya chahte ho?
    so even 3s is like all other mechanics who go on a wild hunch, try this that n see if it gets resolved or not

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    Quote Originally Posted by HellsGuardian View Post
    Glad to STILL have an expert on PW because techie-pw'ers are not active much these days

    Ok i will test when i return home (i.e 45mins of driving so should engine should be fully warmed up)

    Afaik No oxygen sensor in this model of civic. I have no idea about POT. The only time car has been to local mechanic is when cng was installed... Well so far i have only ruled out ECU re-learning so other 4 parameters are still possible suspect.

    In G-10 there is an enercon shop which has exhaust probe and other stuff like that which analyses the gas level, may be i should visit them first before getting into the engine components.

    Just a thought (i might be wrong), when i did ecu re-learn, the air filter was new (2 day old (throttle body serviced too) ) but as the filter gets old, it gets clogged and hence the air flow is reduced. BUT the settings saved in ECU are when the air-flow was higher. Could it be that ecu is sending more fuel because of saved values but in real the air is less so the fuel is not burning completely?
    This whole theory can be thrown away if ecu keeps learning values in real time
    I'm not an expert, just know somethings about my car.

    Air filter, I believe, will not start to clog before 2 oil drains unless you drive in dusty environment. Frequent filter cleaning may overcome this problem.

    I think the oxygen sensor is used, if there, to change the fuel ratio in realtime and keep learning for stoichiometric fuel ratio.

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