Hello, I drive a 2007 EX-L 4 cylinder 4-door sedan with 29k miles. Just yesterday I was running a few errands and after been driving for quite some time (over 30 min), I heard an odd harmonic humming noise coming from the rear of my car. The humming noise will last for about 7 seconds or so and then stop (while driving).
I parked my car, went inside a store for about 15 minutes, came out and was driving home when the noise came back AGAIN for the same amount of seconds. I have been driving the car for about 5 minutes after I started it.
Then, last night I went out and was driving for about 5-10 min and the noise repeated itself again.
The first time I heard it I thought it was a huge semi truck following behind me, but there wasn't. I even shut off my stereo and A/C to hear it better all three times and confirmed it was definitely something from the rear of my car. It sounds electronic to me, like something turning but it's a constant-pitch humming noise that only lasts a few seconds.
I don't know if my speed or RPMs have anything to do with it. I don't know if it has to do with the ABS unit, I wouldn't know what that would sound like. I don't know how to replicate this sound to the mechanic, so I don't want to waste money there if it never happens while they're in my car...hence why I came here first
I have NEVER noticed this when the car ignition was off.
Is this my fuel pump? can someone guess what is going on and how much it would cost to fix this?
My manufacturer warranty expired in October 09 even though I only have 29k miles!!!! aughhh and my accord should not be having problems at such a low mileage!!!