Glad I finally found a place to get some answers, because I have a lot of questions. Currently own a Pewter '99 coupe, it' my 3rd. My first one was a brand new 1975 Burgandy T-top, traded that for a '91 black convertable that I traded for the '99. My '99 is starting to have a lot of codes lately, probably time for a new one. Three week ago it started dying at stop lights, engine would drop below 500 RPM, seemed to be searching for the proper idle. I found a vacuum leak at the PCV valve. Replaced valve and hose, idle returned to normal. Next day I backed out of the garage, shifted to drive (automatic), felt a lurch and heard a clunk , neither very severe but definately different. Now it seems like whenever it shifts as low gear (R,F,& S), it is not smooth. Its seems to get smoother after I get a couple miles on it. As soon as the transmission starts shifting smoothly, if I sit at a light for more than 15 to 15 seconds, the "check engine" light comes on. The two codes that I get are PCM-C0113 & C1111. After I clear those codes, the "check engine" light will turn off and I might not have any more problems all day. Any thoughts?