Last post on Oct 04, 2013 at 8:13 PM
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Honda Accord, Sedan
#1 of 5 New 2012 Accord SE , Vibrations/Noise when AC is on and in Idle(D Gear)
Aug 13, 2012 (11:11 am)
Just bought a brand new Accord SE . Driving back home from the Dealership , i noticed a kind of major vibration/noise.
It happens only when the car is in Drive Gear, with break pressed , and with the AC compressor running.
If i switch off the AC compressor , this vibration/noise goes of.
I can even reproduce the issue at home .
Start the Car .
Start the AC Fan,
Put the car in D .. The Engine RPM goes down.
Press the AC Button , the compressor starts .
And the CAR/engine vibrates so much , that i get vibration sounds from even back of the Vehicle.
Switch off the Compressor , and the vibration and sound stops.
This vibration/noise wont come , if i don't put the car in D (i.e start the car and leave it in park , and switch on the compressor).
Is it possible , that the engine is just so new (around 40 miles) ,and that's why engine is still not at its peak.
#2 of 5 Re: New 2012 Accord SE , Vibrations/Noise when AC is on and in Idle(D Gear) [sidb]
Aug 30, 2012 (7:03 am)
Do you have an update for this? Was it fixed by Honda by any chance?
#3 of 5 Re: New 2012 Accord SE , Vibrations/Noise when AC is on and in Idle(D Gear) [juliankrye]
Aug 31, 2012 (3:03 am)
The knocking sound is much better after 500 miles , but still comes sometime.
The other main issues i am having are
1. Constant Grinding Noise coming from the engine ( Most Probably the Serpe Belt), the noise increases in the compartment , when the AC Fan is on.
2. Single Knocking Sound ( as if something moves and hit some thing) when accelerate from stop.
3.A weird sensation(happens randomly, like a jerk) in the accelerator pedal , while driving.
4.AC Throwing out water off the Vent.
#4 of 5 Re: New 2012 Accord SE , Vibrations/Noise when AC is on and in Idle(D Gear) [sidb]
Oct 01, 2013 (8:14 am)
My car is doing the same thing, and it was such a concern to me because i wasnt hearing the vibrations for a week after I drove off the dealership.
It only happens to me in the same conditions yours is happening. Only when its on Drive, with my brakes fully pressed.
I took it to the dealership to get it checked and they said that nothing is wrong, and that it is the "natural" vibrations of my car, but atleast they have it documented that I came in with this problem.
My car still makes the vibrating sound and I hope its nothing serious. I just purchased it!!!
I hope someone can help me
#5 of 5 Re: New 2012 Accord SE , Vibrations/Noise when AC is on and in Idle(D Gear) [fjillianne]
Oct 04, 2013 (8:13 pm)
I think the compressor is very powerful, and in my opinion it works on-off, because when I put my hand at the air outlet, I feel the temperature varying between extremely cold and relatively cold. I think that it takes a sizeable amount of power from the car engine, so probably it lowers the idle RPM, that's why it starts vibrating a bit. It doesn't bother me.