91 chevy lumina stall issue

[richtazz]

The ECM's are a common problem on these cars due to being mounted under the hood and exposed to the elements. I have answered numerous other threads with the same symptoms. You can test the ECM 2 ways. Take the plastic cover off the inner fender on the pasenger side. When you gain access to the ECM, start the car and tap on it with a screwdriver handle. If tapping (lightly, don't go relieving your frustration on the poor little fella!!!) on the ECM causes the car to stumble and/or stall, the ECM is your problem. The other way is to check for injector pulse with a noid light. If you have good fuel pressure and spark, but lose injector pulse, the ECM is faulty.

[comptech_69]

how does your spark look? Check and see if all your coils are putting out spark

[cheryllephillips@m]

My 90 Lumina stalled out while driving it for firdt time after purchase. I put injector cleaner in tank and filled up took it out on highway and drove it for 2 hours during that time it sputtered like it had no gas pressing pedal got no response like it running out of gas? Checked fuel pump is running..have fuel pressure up to rail...started back up and git it home where it died in my driveway. Won't restart..tested coil packs and plug wires for spark got spark...tried disconnecting neg battery cable to "reset" sensorson recommendation of one mechanic nothing. If I spray starter fluid into breather it starts up and runs but as soon as I stop spraying it dies again. Any suggestions? Did I miss any(or just forgot to mention as it is soo basic)
troubleshooting?