Is there anything that needs to be done at about 120K miles on a '98 Neon Expresso. With the cold weather it's done the severeve misfirring / car shaking at startup. I remember discussion of this and a recall / computer flash. Does anyone know if this is still valid? Also any suggestions as to picking plugs & wires? I've made it this far with the original headgasket, here's to another 120K, Thanks.