Fixed
Ok- now its January 23 and I've finally gotten to work on the car again. The wierd ohm readings I was getting made me think that something was up with the main ground cable, so I ordered one from Honda ($35). Bolted it in today (perfect fit, nice clean connections) and gave it another shot. Just like you guys said, it was a ground problem. The car idles fine now and I can accelerate rapidly. Must have been getting wonky for a while, because even the timing changed a little. After resetting it, the motor sounds better and smoother than it has in years. Thanks so much.