I just bought a 96 honda civic, and when I'm in park the rpms jump around
from 0-2000. If I'm at a complete stop and take my foot off the brake,
the car will accelerate to 20 mph, then drop to 10, and continue jumping
up and down. The rpms jump between 2000-4000 by it's self. last night I
drove 3 blocks home without ever putting my foot on the gas!!! Is this
normal??? What is causing this?