Vibration on idle

  1. FK7_VAN

    FK7_VAN Member

    Joined:
    May 20, 2017
    Posts:
    18
    Thanked:
    4
    Location:
    Boston > Florida
    Car(s):
    17' Civic Hatchback EX
    Hey guys just looking for some opinions.

    Ive had this car about a week now and it seems when I'm sitting in park for quite a while I feel a slight inconsistent vibration. Its not too strong but could be felt through the seat/ your legs (vibration is kind of like the one felt when you're powering off the car).

    Also want to point out I've usually only noticed this while I'm in my driveway at a slight incline and my car is at 700rpm. A/C on or off doesn't change anything.

    Both times Ive felt it has been after reving my engine while parked not sure if this changes anything. (haven't tried it without ever reving)

    Anyways, anybody else feel this? Am I thinking too much into it and its normal?

    Ive drove a chevy with a messed up CVT in the past that vibrated an awful lot so just scared of the same.
     
  2. choo

    choo Senior Member

    Joined:
    Dec 10, 2016
    Posts:
    316
    Thanked:
    124
    Location:
    FL
    Car(s):
    '17 Hatch Sport 6MT , 240SX's
    I had this issue in my car. Took it to the dealer and they said nothing was wrong.

    After I got my KTuner I hooked it up and realized the car was idling at 600rpm. The tachometer gauge showed about 750rpm while the car was actually idling at 600. This is clearly not right since the target idle RPM is 720 with A/C off.

    After some slight re-scaling of the airflow sensor the car was able to hit the target idle of 720. It was still a little rough for me though so I turned it up to 800rpm, and now it actually feels like a new car idling.
     
    Quicksipper thanked this.
  3. skstyle

    skstyle Senior Member

    Joined:
    Aug 2, 2016
    Posts:
    557
    Thanked:
    577
    Location:
    Toronto, Canada
    Car(s):
    2016 Civic Coupe EX-T
    my car has slight vibrations at 600rpm, not too noticeable but its there. turning on the lowbeams or the ac bumps it up to 700rpm and stops vibrating
     
  4. OP
    OP
    FK7_VAN

    FK7_VAN Member

    Joined:
    May 20, 2017
    Posts:
    18
    Thanked:
    4
    Location:
    Boston > Florida
    Car(s):
    17' Civic Hatchback EX
    It seems like this may be the case with mines as well. Im glad its not the CVT atleast.
    Im debating even wasting my time with the dealer because they'll probably tell me the same BS.
     
  5. OP
    OP
    FK7_VAN

    FK7_VAN Member

    Joined:
    May 20, 2017
    Posts:
    18
    Thanked:
    4
    Location:
    Boston > Florida
    Car(s):
    17' Civic Hatchback EX
    I've tried both A/C on and off but not low beams. Ill try that next and see if it changes anything. Thanks!
     
  6. choo

    choo Senior Member

    Joined:
    Dec 10, 2016
    Posts:
    316
    Thanked:
    124
    Location:
    FL
    Car(s):
    '17 Hatch Sport 6MT , 240SX's
    See if you can get a cheap scanner, or go to Advanced auto or something, and check the actual RPM the engine is running at so you have some evidence :D
     
  7. OP
    OP
    FK7_VAN

    FK7_VAN Member

    Joined:
    May 20, 2017
    Posts:
    18
    Thanked:
    4
    Location:
    Boston > Florida
    Car(s):
    17' Civic Hatchback EX
    Will do. I actually worked at Advance for 4 years and didn't even think of this lol. Appreciate it!
     
  8. romeroj116

    romeroj116 New Member

    Joined:
    Jun 28, 2018
    Posts:
    1
    Thanked:
    0
    Location:
    Chicago
    Car(s):
    2016 Civic EX-T

    How do you KNOW that the target idle RPM is 720 with the A/C off? Did you talk to a Honda technician? Where did you get this information?

    Please provide me with that information as my 2016 Civic EX-T vibrates considerable when the tachometer indicates 600 RPM and I am trying to get the dealer to fix it under warranty.
     
  9. elykoj

    elykoj Senior Member

    Joined:
    Feb 5, 2016
    Posts:
    394
    Thanked:
    68
    Location:
    cleveland ohio
    Car(s):
    2016 civic
    When my car is idling in drive, I get vibration in the dash and the drivers front seat vibrates, if I slightly hit gas or put in park the idle bumps up just a bit and the vibration stops. Of course dealer cant duplicate the vibrations but states the idle is at factory specs..
     
  10. civicdota

    civicdota Senior Member

    Joined:
    Jun 14, 2017
    Posts:
    99
    Thanked:
    20
    Location:
    Toronto, ON
    Car(s):
    2017 EX-T Sedan
    If your car idles at 600rpm I think it's normal. The crappy part is everything inside including the seats resonate at that RPM lol so it amplifies the effect. To bump up the idle to 700 or so either turn on the headlights for nighttime driving or turn on the fan. It should bump it up to 700.
     
  11. Plezor

    Plezor Member

    Joined:
    Mar 14, 2018
    Posts:
    17
    Thanked:
    5
    Location:
    Australia
    Car(s):
    Civic RS sedan 2016
    My car does the same (idles at 600). I think this low idle is a part of the never-ending quest to reduce fuel consumption, especially on the official test cycle where cars spend considerable time stationary. I am guessing that all engines would vibrate somewhat at this idle speed. So it is likely a compromise that Honda made. The upside is that in my experience this car (1.5T) has outstanding real life fuel economy.
     
Loading...

Share This Page

Loading...