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'13 Sport CVT white
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Discussion Starter · #1 ·
I've been noticing that my car makes this vibration sound coming from the rear of the car after it is just started up and moves about a hundred feet or so. It lasts for a bit less than a second or so. My wife and I have been kidding each other that our car has been farting, not too far from what it sounds like really.

I thought there were grooves or something on my driveway because it usually vibrates at the same general area, but lately I've noticed it happening at work. The sound is like riding over tiny rumble strips, higher in frequency. Now I'm convinced it has nothing to do with the tires running over something making the noise, it seems to be happening after a specific distance when first started up.

What could it be? I was thinking possibly a fuel pump vibration in the rear where the gas tank is? It doesn't matter if the tank is full or empty it seems.

Any ideas, or has anyone noticed anything similar?

TomZ
 

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Tampa FL
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I have not noticed that, it may be something with your car in particular
 

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I thought I read that on my Ody it does some sort of a brake check in the first few moments of driving which causes this? I'm not sure I've ever noticed it but I remember someone posting about it awhile back...
 

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It's the active noise cancellation maybe? My buddy had his 8th gen v6 that would make the noise a lot. It like the subwoofer goes "wwwwwoooOOOOOp". Yeah just like that lol.
 

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It could be coming from the anti-lock brake motor. When the car is started the brake pressure to the anti-lock system is maintained by an electric pump. You may be hearing the pump motor as you are backing out of the driveway. I haven't noticed this in my 2013 Accord but I have noticed it in my 2000 Accord. I have highlighted the section in the owner's manual. When backing up it may be difficult to determine if the motor sound is coming from the front or the rear of the car.
 

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Even My Mower Is a Honda!
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Is could any one of these...

The Back Seat Fart - This is a fart that occurs only in automobiles. It is identified chiefly by odor. The Back Seat Fart can usually be concealed by traffic noise as it is an eased-out fart and not very loud. But its foul odor will give it away, due to the way air moves around in a car. It is often followed by someone saying, "Who farted in the back seat?"

The Burning Brakes Fart - A silent fart identified by odor alone. Usually and adult fart, occurring while the adult is driving a car or has a front seat passenger who farts. The Burning Brakes Fart actually does smell a little like burning brakes, and seems to hang around longer than most farts Which gives whoever farted a chance to make a big show of checking to see if the emergency brake has been left on. When he finds it hasn't you know who farted. A common automobile fart.

The Car Door Fart - Either a group one or a group two fart. Very tricky. It is meant to be a concealed fart. A matter of close timing is involved, the farter trying to fart at the exact moment he slams the car door shut. It is usually a good loud fart. It is one of the funnier farts when it doesn't work, which is almost every time. It is a desperation fart and not too common.
 

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Elvira
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It could be coming from the anti-lock brake motor. When the car is started the brake pressure to the anti-lock system is maintained by an electric pump. You may be hearing the pump motor as you are backing out of the driveway. I haven't noticed this in my 2013 Accord but I have noticed it in my 2000 Accord. I have highlighted the section in the owner's manual. When backing up it may be difficult to determine if the motor sound is coming from the front or the rear of the car.
Flyboy sounds to be on the mark. at first I thought you might have light rotor rust on your brakes and you wear it off as you pull away. I get this more when the car is left parked outside in the rain or after a good wash. If it happens regularly it's probably the ABS check sequence.

Anyway the OP title made me think it gives a new meaning to "put a little gas in the car":lmao:

Miker
 

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Rhymes with **** & Quick
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She does not queef, thank you very much.
 

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I thought I read that on my Ody it does some sort of a brake check in the first few moments of driving which causes this? I'm not sure I've ever noticed it but I remember someone posting about it awhile back...
It could be coming from the anti-lock brake motor. When the car is started the brake pressure to the anti-lock system is maintained by an electric pump. You may be hearing the pump motor as you are backing out of the driveway. I haven't noticed this in my 2013 Accord but I have noticed it in my 2000 Accord. I have highlighted the section in the owner's manual. When backing up it may be difficult to determine if the motor sound is coming from the front or the rear of the car.
Yeah, this is what I was remembering. I must have read it in my Odyssey manual.....
 

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'13 Sport CVT white
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112 Posts
Discussion Starter · #13 ·
I think the ABS idea may be what's going on.

It happens for instance after I back out of the garage, and have pulled out down the driveway 100-300 feet. It has happened at work several times too, although I usually have the radio cranking since I'm alone in the car at that point, and probably don't usually hear it.

It never happens when I'm backing up out of the garage, it takes longer than that to happen.

And I'm not positive, but I'd swear that it is coming from the rear of the car. At least that's where the sound appears to be coming from. I have to lights on the dash lit up, and everything seems to be working correctly, so I guess I won't sweat it.

If I still hear it come time for my next service, I'll mention it to them I guess.

My noise canceling is 'canceled' on the rear of my car, as I have a custom sub installed with amp in the rear.

Thanks for thinking about this with me, I appreciate the effort.

TomZ
 
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