I have a Redline 2.4 ecotec in a play car that has always ran perfectly until the last trip out it started this high idle problem. Car starts fine, runs fine, pulls hard but when you let off the throttle it idles at 2500 to 3000 RPM. Unfortunately, I live in Kansas and I do not have a shop around here that can plug into the MEFI-5 computer to help diagnose the problem. I figure someone in class 10 or superbuggy has experienced this? Any help would be appreciated!