There is no check engine light, but it usually misses at the lower RPMs. It can be fairly quick if it doesn't miss but it just has a kind of slow start. It basically has problems with acceleration. And it has new plugs and plug wires so that isn't the problem.

'97 Contour GL MTX Blue Stereo: Pioneer Headunit, Pioneer 6x8 3-way all around, MTX 421d Mono Amp, 2 10" MTX Thunder 5500's, Custom Split Box, 1.5 farad capacitor