[Mr. Pockets]

This might be just my paranoia, but in case it's a sign of something serious, I'll ask you guys about it.

I noticed that when my SVX idles, it makes a cyclic noise - like a RRRrrrrrrRRRrrrrrrRRRrrrrrrRRR sort of noise. It idles at a normal speed, and the revs don't lope up and down perceptibly, but it's making a noise like it is. A/C was off and I had the car in the garage on jackstands - I had just hooked the transmission cooler back up and wanted to make sure it didn't leak before I put the bumper back on.

Any ideas?