CEL hit the first time tonigth at 115,000 km

symptoms, none really apparent
on hard acceleration above 60 kph it seems to dog or loose power (between 4500-6500 RPM) for a split sec then picks up back to normal

my first thought would be bad plug wire, but their almost new 9mm ford racing wires

next thin, bad plug? i know they need done...

o2 sensor cause the power loss? its very minimal but you can feel it, engine seems to idle a little rough too nothing major by any means, but not as smooth as normal


any other suggestions?

next Saturday im taking the heap in for sparkplugs and the h20 pump... and this damn CEL






98 contour gl, v6 auto 01 explorer sport v6 auto 2001gtp AT gmail DOT com