While driving I occasionally get a jerking, or jolting, or not smooth accelerating. I feels like its not getting gas, and then I press on the gas and it goes rapidly, or accelerates very rough. It is almost like a bad rpm rlay, but I borrowed the relay from another car, and I get the same problem. I am still getting about 13-15 mpg, so I am thinking that these problems may have something to do with each other. any idea or advice? Joe Palatinus VIN 17167 +6808