I just bought a 2000 2.7 Intrepid with 134,000 miles for a project for $700. The guy I bought it from said it needed a timing chain that it slipped a tooth. I did the key thing and 3 codes came up, I got those all cleared up none to do with timing. The car acts like it has a bad vacuum leak at the rear of the engine under acceleration, not when it idles, and idles high and rough. It seems to act up at start up, after it is warm it does just fine. So I bought an OB2 and got a 4th code which displays "manufacture control". I have replaced the MAP and cam sensors but did not help. What could be the manufacture control code be? The car runs great after clearing the codes. Thanks in advance.