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Thread: Car ( Vitz 2005) vibrates on idle but only when Headlights are ON

  1. #1
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    Default Car ( Vitz 2005) vibrates on idle but only when Headlights are ON

    I recently did periodic maintenance.
    1. Cleaned Plugs
    2. Cleaned throttle body
    3. Changed CVT Fluid (40K interval)
    4. Replaced front break pads and cleaned rear drums.
    5. General cleaning e.g. battery terminals, air filter etc.

    On my back the car turned off itself and refused to even crank the engine on self start. So after inspection I found the pipes on throttle body were not connected and radiator emptied through opening. So I called mechanic and he sent his boys to reconnect the TB properly.

    After that car is stable and didn't turn off and power performance is good. Though since yesterday I noticed when stopping at signal the car vibrates consistently but smooths out once rpm increases. Today I checked again but it didn't vibrate but after returning home I turn off Headlights the vibration disappeared. I tested with headlights ON / OFF and same behavior. So I turn off headlights and used power windows and car vibrated when windows are moving.

    So could this be a symptom of weak battery?. Mine is around 2 years old.

    I'll reset ECU by disconnecting the battery. Could the sensor values go haywire because throttle body wasn't connected properly?

  2. #2
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    Default

    u ran the car without water
    car must have over heated
    that should be the primary concern at the moment

    did the over heat indication turn on
    Life is short and very unpredictable just like a Quarter mile .....

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    Default

    brother there is nothing to worry about
    it is normal in vitz to vibrate occasionally

    just use hi octane with normal pertrol
    hope fully your problem will be solved
    -

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    Quote Originally Posted by hash4u View Post
    u ran the car without water
    car must have over heated
    that should be the primary concern at the moment

    did the over heat indication turn on
    No. I drove hardly 800m. Heat indicator didn't turn on.

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    Quote Originally Posted by MADDYBOY View Post
    brother there is nothing to worry about
    it is normal in vitz to vibrate occasionally

    just use hi octane with normal pertrol
    hope fully your problem will be solved
    I use high octane regularly, only fill up regular petrol when former is not available. There is no knocking or taped sound.

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    Default

    Who is best person in Rwp to have ODB values checked. And proper calibration of sensors.

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    Default

    Get it checked via ODB. It will also comfirm ur battery status. Btw it looks like weak battery issue.


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    Default

    The car has stabilized after ECU reset. But those are default values. I'll have OBD checked after 10-15Km in traffic. So I would know which part is acting up. But right now the vibration is ignorable.

    I'll change the battery also. It's more than 2 years old. And someone on forum had good results by using voltage stabilizer. These common Flooded batteries are unreliable.

    Update: Tested the car on empty road with stop-run to simulate signals. No vibrations. Will need to observe carefully for a week but seems like ECU Soft Reset has solved the problem.

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    Default

    vitz do vibrate, even if everything is perfect. I have seen that even after entire tune up like mentioned above, it still does it.

    One strange behaviour, my friend has 2010 model vitz, once he changed oil to valvoline, vibration started happening as mentioned above which was not previously. strange

    may be its oil type as ewll

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