INTNS

you should replace some of the ignition parts...i.e. coils, if you haven't replaced them yet, they start failing around the 200k mark...also check some of the electronics, i.e., water pumps. have u ever gotten a carbon flush? if it hasn't been done on your car for a while then have it done, it just removes excess carbon build up in the engine. I'm not an owner but my mums car ('94 bluebird SSS) recently got a 200k service and that's some of the extra things the mechanic replaced.