What is this rumbling sound I hear in my new Ford Explorer?

What is this rumbling sound I hear in my new Ford Explorer? - 1

It's the engine.

We just purchased a new 2016 Ford Explorer, love it!

BUT, there's a hum, or rumbling that we can't quite place.

It isn't vibration, its a humming that you hurts our ears after awhile. We only hear it when idling in drive, or when parked or in Neutral. If we park the car, and slightly press on the gas, the humming goes away. So when were injecting fuel, there's no weird humming, but as soon as we stop, after about 3 second the low hum is back.

Could it be the idle sensor, or the air intake sensor or something?

I read a lot about people having this issue, and the dealerships sending them home empty handed. I'd like to go in with ammo, because I don't think my car should give me a headache when idling.

Its new take it back to the dealer its under warrenty won't cost you a thing and if you don't like the dealer you bought it from you can take it to any ford dealer ask them to check for a tsb on the problem technical service bulliten