I just put a new 2.8 crate motor in a 1991 trooper wasnt getting injectors to fire so I just bought new ones but before I install them I was wondering if there is anything I should check first so I dont burn them up......i hfforave been reading about other cars having resister packs for the injectors......i have been testing all the voltage and was getting 10 volts out of the ecm where it says 5 volts referance that runs to th e sensors?