Recently bought a 99 CRV. Great ride, however there is a slight grinding noise that happens when accelerating at lower rates. The CRV is the 2WD LX model.

Specifics:
1) does the sound when in park and the engine is revved
2) if driving lower, like through a parking lot, it makes the sound
3) if driving normally, the sound seems to be minimized, and disappears at speeds above 20 MPH

If anyone could help I would be greatly indebted.