2016 honda pilot EXL
At any speed i hear a humming noise coming from under the hood , a noise like having your mouth closed and saying hmmmmmm. it last for about a split second. no warning lights come on. my trans has been service , timing belt replace, spark plugs .induction cleaning , and the fuel jets were replaced during the recall. It runs good and the trans shifts smooth. been doing it for 6mo and doesn't seem to be getting any worse. any suggestions out there. Thank you