What would cause a dead skip?

Just curious if any of you guys have expierienced the same isssues. We had the "intake manifold gasket" problem that everyone seems to have. We got it all put back together and we have this "dead skip"... We are pretty sure everything was put back to the way it was..........But for whatever reason this thing runs ruff..............I got it up to 80 down a country road...........Tempetures are fine everything loooks good.......But the service engine soon light stays on solid....once @ 80 it seems to be running fine but i know the skip is still there just cant feel it as well.................I am clueless and wouuld greatly appreciate anyones help..........Thanks in advance :cwm27:

Well, what's the code say? Obviously it dete.ted a problem. That would be a good starting point.

We have it fixed now.....WHEW.........it was a issue with the wiring of one of the injectors........Also we didnt have a code reader or whatever.....LOL........Shaddy Shade tree stuff going on here........LOL