Hi, couldn't find any similar posts...
1993, 3.8, only 40,000 miles. 'New' to me. Starts perfectly every time, runs and idles smoothly... until warmed up! Then when I press the gas, it does not 'go', or even rev up; check engine light comes on and stays on. To move, i must barely press the gas and can only accelerate very very slowly. Press harder and it seems to 'choke' itself. At idle or in Park, it begins running rougher and may stall. Strangely, when in Park it revs fine; Reverse seems OK, too [for accelerating]. Slight burning smell inside car after all this, though cannot find source [may be unrelated]. Just changed alternator-- old one had burn marks at the top screw. Any ideas??