Sorry i don't mean to butt in, except i recently had the same problem i replaced the LIM gasket and the UIM gaskets got it all back together started it and instantly could hear a vacuum leak i ignored it and eventually the SES light came on i took it to a shop a buddy of mine works at and they put it on a scanner and it indicated a lean condition. So I went home took it all back apart to find out what was causing it. Turns out the LIM had a small piece of old UIM gasket still stuck on it that i had missed that was preventing it from sealing and allowing air to leak in. Moral of the story make sure everything is VERY, VERY clean before you put it all back together. Hope this helps.
