Franks 2003 HD
New Member
I just purchased a 2003 F-150 H-D with 62,000 miles. The truck runs fine as long as I don't go past about 2,500 RPM. If I pass 2,500 the truck seems to have a misfire and doesn't make boost. I was told to reset the ECM but I'm not sure how to do this. I disconnected the battery overnight and that did not fix the problem. Any help is appreciated.