04 2.5 S. The other day this started and only above 2000 when slightly depressing accelerator. I'm thinking fuel pump because about 1-1/2 years back I got one from ebay. It wasn't real expensive so it makes sense. I read about checking the vvt solenoid another thing replaced less than a year ago. I added some heat and a good injector cleaner. Just hoping someone has had similar problems and can give direction. Thanks, B.R.