I had the same problem on my 89 Ciera. My engine is the 2.8L MPFI. In the beginning of the problem my engine first began to stall and would restart maybe minutes later, long story short, each restart cycle took longer and longer until it no longer start and it ended up where you're now. I spent lots of time checking out all kinds of stuff and advice. So I cut to the chase. Ask yourself what does it need to run? SPARK, FUEL, AIR. What is not working. Let's skip the AIR for now. Are you sure you have spark??? OR is this a fuel issue??? A very quick and easy test. Let's confirm the spark first. Rather than dismantle half the car, let's do a very simple test. Remove the air hoses to the throttle body and have someone use the key and spin the engine over, and confirm a no start issue. Next let's spray a small amount of Berrymens B12 into the throttle body....while the engine is spinning over. If it starts and runs while being sprayed,you now know for sure the ignition system is not at fault. So that confirms SPARK. Now know we are dealing with some sort of FUEL issue. So can you confirm fuelrail pressure is good and normal at the fuelrail??? Yes or No. Assuming you can confirm correct fuelrail pressure and the pressure holds steadily, now I suspect the injectors could be at fault. If you have at least two injectors, one on both sides of the engine, you can have a total shutdown of electrical pulses to ALL the injectors at the same time, cause by the two injectors with faulty OHM specs. On my car 89 Ciera, the left and right sides of the injectors electrical system has separate grounds. Nowww...if you have a single injector on...let's say the leftside of the engine, that is out of OHM spec, that one faulty injector CAN affect the other two injectors on the same side. Now if by chance you have the same issue on rightside it can affect ALL the injectors at the same time. The ECM now becomes overwhelming conflicted with false and erratic information and shutdown all injector impulses at the same time. Thus fuelrail has pressure but no electrical pulse to ALL the injectors at the same time. CONFIRMED fuel problem. This actually happened to me on my car!!!!
May 9, 2026 at 5:15 PM
