Hey guys, need advice. My xr6t has a regular misfire. I have checked cool packs and they seem to be fine. Replaced spark plugs to be careful. Also the car is sitting at a 2200 resting rpm both when it's hot and cold. When I put the clutch in to change gears or when I am powering down for traffic the revs spike to 4000rpm and do not reduce until the car has come to a complete stop. Furthermore I can now drive around the city without using my accelerator as the idle is rising of its own accord. If I coast while in gear the revs will slowly climb and force the speed to increase. There is a distinct fuel smell associated with the issue, causing the car to have an average fuel economy of 30l/100km Any help would be appreciated!! Thanks, Josh