Contour Enthusiasts Group Archives Forums General Troubleshooting Rough idle...tons of searching...still not fixed

we've tried wires, coil pack, plugs, and fiddling with the gap now and all to no avail. Gonna try and clean IAC prior to going for fuel pump. Vacuum seems OK...smoke tested by dealer. Runs pretty good on highway but rough idle comes and goes...sometimes stalls out right in the garage. Very perplexing.