what do you mean about the power/no power? i am having what sounds like similar symptoms, under heavy accel, on occasion the VX feel/sound light its stuck and will stop revving higher for a second (usually in the 3500-4000 rpm range) then i recently noticed after stopping after a highway trip id drop down to about 500 rpm (so says the scangauge, but the tach needle would hit the stop) then kick back up to 750 or so (which is normal for my vx).. i didnt even think it would be my TOD... i was gonna start with replacing the fuel pressure reg. this weekend and see what that does