I am stumped. I bought this truck not running, it shut off the day I was coming to see it. It's a 1995 auto with 141k miles. I put a new CPS in it and it fired right up and ran amazing for 30 seconds. I shut it down because the oil pressure was 0... I forgot to plug in the oil pressure sensor wire after I checked the HPOP level. I plugged it in and went to start it up and just crank absolutely nothing no smoke from exhaust not even an attempt to start. Wait to start light works, RPM comes up while cranking, I have good fuel pressure. I tried with CPS unplugged and nothing. Yes I tried unplugging the oil pressure wire again. I put it on a scanner and I had 3000psi at the ICP and my IPR % was 55. Ok so bad IPR, I changed the IPR and absolutely no change. I did bump it with ether and it fires instantly. She is ready to run but the injectors absolutely will not fire. According to previous owner Injectors are a year old and so is HPOP. Any advice is greatly appreciated. Thank you.