how to diagnose noise?

[dltrial]

My 91 Loyale has a noise which sounds to me like road noise.

 

It starts at about 30 mph and gets louder as I drive faster. It doesn't seem to 'speed up' as rpms increase like a bearing noise. But it does get quiet when I turn right sufficiently sharply, which I have seen with bearing noise before.

 

The noise may be in the front end since I raised the front end and ran the engine with the car in gear and it seemed like it was making a noise but not nearly as loud as when driving.

 

It's not the tires, since I put different tires (on the front) and the noise still exists.

 

I can't feel any heat in the hub area after driving which I might if the wheel bearings were going.

 

What else can I do? any suggestions are welcome.

[Dee2]

raise the wheel off the ground. grab the tire at the 6 and 12 o'clock position and rock it back and forth.  If you feel any movement or hear any klunking, it's a bad bearing.

 

If not a bearing, put a pry bar under the tire and lift up and down.  If you hear a klunk or feel any play it's likely a ball joint problem.

 

Could also be an axle problem.  If you start to hear any clicking sounds when driving or turning it's the axle.

 

Could be a brake related noise but not enough info to tell.