I have a 2000 Dodge Caravan 3.0L. The problem I have is there's a loud noise near rear of vehicle while driving.

- I don't believe its the exhaust system because it noise doesn't increase when pressing on the gas, only when the car moves.

- The van idles smooth. The van accelerates smooth initially (from 0-10).

- The van runs smoothly when doing 10-15km/hr.

- When going 40/50km/hr+, the steering wheel wobbles about 5 degrees in either direction.

- The noise is like a vibration that reverberates through the floor and sounds like it's coming from the rear.

- Revving the engine in park does not produce the noise.



What could be the cause of this?

 

Sounds like a lot like the following youtube video...

http://www.youtube.com/watch?v=O0a-L...eature=related

Could it be bad wheel bearings?

 

good possibility it is wheel bearing noise. Should be able to get the noise to change by swearving back and forth.