I bought my 2002 ford focus zx5 used with 150,000+ miles. I have been driving it for about 6 months now with this engine vibration/miss. It seems to smooth out upon accerlation. There were no dashlights showing. I took it to the Ford dealer to have a diagnotic done on it and nothing showed up. They told me that it was not coming from the engine but could not tell me what it was. They said that these little cars were bad about these vibrations once they got a few miles on them. The other day my son was driving home from school when he said the vibrations got really and bad the the faucet light and the gear light with the ! in it came on the dash. He was not far from home and made it on in. I have not been able to check on it since he has it at college. I told him not to be driving it until I could check it out. Any ideas?