Cause it's not getting enough fuel? Try this. From a standing start floor it and look out the rear view mirror. If you don't see any black smoke it's probably running lean and the ALDA may need adjustment. Had same car 2 months ago with same symptoms and same shadetree diagnostics. After adjusting ALDA it took off like a bat out of hell from a stoplight. Only put out a little (acceptable) amount of smoke during heavy acceleration and still averaged almost 33mpg on a 1500 mile trip.