hi,im new to the club,was hoping someone could help me with a problem,i have a 91 lexus ls400,it started stalling,acted like it wasnt shifting into higher gear,used to crank,then started hard cranks,now it cranks but no start,i replaced fuel pump,fuel filter,checked fuses,checked,harness in trunk,i m stumped,why no start and why wont it shift to higher gear