When at a cruising speed, I've noticed this past week or so that there is a BIG sound difference if I'm on the throttle cruising or if I lift the gas. When I'm holding the throttle down there is a heavy droning sound (there was always a little, but I don't remember it being that bad). When I lift all you really hear is the wind, engine idle, and tire noise. When I get back on the gas the heavy drone kicks in.

I did motor mounts about 20-25K miles ago (and transmission mounts), but I have not replaced the little engine shocks. Do you think they could be engine mounts already or should I check something else?

If I watch the engine with the hood up (foot on brake obviously), as I go from Drive to Reverse the top of the engine does pitch some, but I would say the shake at idle is not that bad. Under highway load, something sure is resonating. I just had the car aligned when I did tie rods so I'm not feeling anything through the steering - she's driving straight as an arrow. I do feel some vibration through the shifter.

Thoughts?

__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net