new issue just started on my 89 9000 cd when driving if i go past 2500 rpm it sounds and feels as if i have a rev limiter set, but i don't. it isn't fuel cut and no limp home mode i still have power/boost until 2500 rpm. any idea what may be causing the problem before i go rip the ignition wiring apart chasing electical faults. my A/f ratio is stoichometric if that helps so no lean/rich conditions. i forgot to mention i have been having trouble getting her to start after sitting for a week also the batt has 14.47 volts, i know the starter and alternator both work which i leading me to beleive it is the igniton unit located on the wheel well next to the battery.