working on a 95 tbi system the issue i have is i can start it when its cold and it will run for 15-20 minutes and dies sometimes it will restart and run for a couple minutes but dies again and wont restart. ive changed distributor ign module ecm oil pressure switch injector pod fuel pump and relay. im runnin out of ideas but when it dies i loose voltage to my injectors. if i spray wit ether it fires up. does anybody have any ideas