I have this humming noise coming from the back of my car. it hums when the car is in park just sitting there and when i start driving it will go away for a second then come back. anyone have any idea whats going on?

 

it could be your differential, where exactly is at in the rear ? how long has it been making that noise ?

 

Fuel pump is beginning to act up.

 

I'm not to sure how long it has been doing it just bought the car yesterday it wasn't doing it when I test drove the car. Drove it home 200 miles then it started doing it. It doesn't sound like a differential hum it kind of sounds like an electric motor running like a power antenna or something of that nature.

 

do you hear the hum before you start up the car, cause thats usually the fuel pump turning on

 

I haven't ever really payed attention to it when i started it up because its not annoying then but when you start driving it gets really annoying. but i will check into that.I know what a gearhumsounds like and this is not what it sounds like. i kind of thought it was the fuel pump. but its kind of coming from the driver side of the car. if it was differential related would it be making noise while its in park?

 

yeah normally it will make a hum when in park or at a stop, but it can still hum while driving

 

Ok thanks so much

 

I just had this same problem andI posted the same question as you a few weeks ago. It was the fuel pump. After the humming started it lasted about2 weeks before it started going out so I'd get it fixed pretty quickly.

 

I love gettin a hummer in the back of my Camaro