I have a 98 2.5 millenia that runs rough at 1500 rpms and at 2500-3000 rpms or over 60mph. I went to advanced and the scanner pulled a 0400. After getting the code I cleaned the ports behing the throttle body that were completely covered and cleaned the vac port from the intake to the boost/map sensor and cleaned the egr and cleared the codes. The car still has the slight miss at 1500rpm and runs really rough at 2500-3000 rpm. Has anyone ever had this problem? Any help will be greatly appreciated.