Ok, i just bought a 1997 civic ex with an automatic transmission. It
runs great, but i am noticing a harsh idle when i come to a stop and
the air conditioning is on. If i am at the stop and i dont like the
way the car idles, i just turn off the ac and the car will idle at
around 1000. Problem is if the a/c is on then it will idle around 500
and give me an annoying shake. I am no car expert but my dad thinks
that i should replace the spark plugs and wires and adjust the idle
higher. Now if i do this won't i burn excessive gas.... the draw to
this car was the price and gas mileage! So what should i start
checking first with this problem?