It was always a manual. The new engine has the original tranny bolted on. To be more specific, when she's cold and starts up and begins to warm, the engine will start to rev UP AND DOWN between 1000 and 1400 rpms or so. It will continue to rev up and down until it warms up a tad more, where it seems to idle just fine at about 800 rpm. After driving for a bit, and coming to a stop light or sign, it will rev up and down again between 800 and 1200 or so rpm. At first I thought maybe it was just the idle air control valve, but with it throwing a code 19, I kinda figured that maybe I was sold an automatic ecu, which by the way is a P91.