3.3l motor. RPMs go up and down with no consistency above about 35 at part throttle. Does not do it coasting or passing, still does it if you put it 3rd. Starts happening after the motor warms up. Gas millage is bad ( 17 hwy ). Replaced plugs, wires, and coil pack ( brought mileage up from 14). No code, hesitation, smoke, soot, etc, runs fine other wise. Only odd thing is it started not long after oil change.
Tuesday, February 14th, 2012 AT 4:38 PM