i have read the post and done everything listed, still having the same problem...i have a 89 trans am 305 tpi...car wont start.. replaced ecm/prom, dist. module, injectors all relays and traced all wires, there are no engine codes showing up... replaced ecm and module, car started, let it run for 5 min cut it off and it never started again. the car has been in the shop now for 3weeks and the bill is getting bigger. i have even went as far as to give the shop printouts from this website, still no start...help asap please...or come buy it real cheap!!!!! im sick of it