OK, so here goes. I changed the distributor cap, rotor, plugs and wires using the kit from LMR. Changed the starter, too, because that was on it's way out. Had the car out today after a while and noticed a couple of peculiar things. The first: while it was sitting in the garage, the idle would fluctuate between about 700 and 1000 RPM without me even touching the pedal. In fact, I was out of the car when I noticed it. The second: while out driving, when I shift into neutral, I noticed that the RPMs race a little and then drop. It was almost as if it was going to stall, but once I blipped the gas a touch, it would even out. The previous owner said something about he changed the throttle position sensor at one point. Could that be it?