I get a low humming noise most obvious when making turns left or right. I also noticed this noise a couple times while going straight on the freeway. It ll make a low humming/ groaning noise which has been getting louder and louder. Couple people have suggested either my diff or my wheel bearings. Took it to a local shop and they couldnt find the source of the noise. While driving it seems the noise is up front but the mechanic thinks its from the rear.

anyone have any idea what it could be?

TIA

 

Drive in circles in opposite directions, putting weight on the bear will make the noise, shifting the weight off the bear will quite the noise.

 

so your thinking i need new wheel bearings?

 

It's how to troubleshoot if it's a wheel bearing. When you take a sharp turn, depending on the direction should get either louder or quieter.

If it doesn't change, I would keep driving until it gets loud enough to change it's volume by turning.

Changing your diff fluid wouldn't hurt either, just make sure you put the proper stuff in.

(Unless both are going at the same time, rare but not impossible)

 

thanks for your input iDomN8U, i actually had the diff fluid changed this past saturday and the mechanic said the fluid looked good and no flakes or anything. The noise is still there howerever.

 

I believe you can also jack the car up and check for play in the wheel.
[media]http://www.youtube.com/watch?v=JSsC-lWB1lg [/media]

BUT i'm not 100% sure on this one

 

yea i tried that to cus someone suggested it to me..there was no play in the wheels

 

I'd be willing to bet money it's your wheel bearings. I had the same symptom's with no play when I shook the wheel.. Ended up being a bad wheel bearing and hub.

 

cool thanks man! i was wondering wether i should pull the trigger on just replacing the wheel bearings or not. I guess i ll try it now though since most people are recommending me to just replace them and see if the noise goes away

 

mine does the same thing but i notice that when i push the clutch in when i turn hard it does not do it, only under power the humming noise is there. try this and report back.