ok so here's the problem. To start I took out the maf sensor and cleaned it. That didnt help. I can sit in the driveway and push the gas peddle down about a quarter of the way to get the rpms to go up and at a certain point the engine will rev. up and then down and continue to do this while i have my foot on the gas. i know im holding my foot completly still. its exactly like im pusing the pedel a little and then letting up on it ad it does this over and over till i let up. Any sugestions would be great. Thanks