Hello everyone. I have joined this forum in hopes that someone can help me with my problem. I have a 1989 Full Size Blazer, Fuel Injected 350. My problem: It starts perfectly. Will run for about a minute or so, then slowly stalls out and cuts off. It will restart with no problem, then run for about 20 seconds or so and cut off. It seems as if it warms up, and then this occurs. Once it is warm, before it stalls out, if you shift it into gear, reverse or drive, it dies instantly. As if it can't handle the load. WIll run in Park and neutral, but not in gear, at least until it warms up. It is driveable, if I 'powerbrake' it at stops signs and lights. But seems as if it doesn't have as much power either. Like it is starving. Upon starting to track this problem, several mechains have gave me their suggestions. Therefore the list of replaced parts has grown, but has not fixed the problem. If anyone has any ideas, please let me know. I am beating my head against a wall here . Here is my list of replaced parts: 1. Fuel Filter 2. Spark Plugs - Bosch Platinum 2 3. Distributor Cap 4. Rotor 5. Ignition Module 5. Oxygen Sensor 6. Idle Air Control Valve 7. Map Sensor 8. Fuel Pressure Regulator 9. Throttle Positioning Sensor 10. PCV Valve 11. Gasket between Manifold and carburator 12. Gasket between carb and throttle body These parts were bought, checked, and since no difference was noted, I returned them: 1. ECM Computer 2. Fuel Pump Relay 3. Timing 'adjuster' next to throttle body 4. Coil I removed and thoroughly cleaned the fuel injectors, as well as replaced them with another set I had, and no change. Checked for vacuum leak as well as replaced several hoses just in case. And lastly, approximately one year ago, I replaced gas tank and sending unit. Problem started one day out of the blue, and can't seem to figure it out. Please HELP I need to remove the demons!!! Thanks...Jason I got one of the 'plug in' code readers, and all it said was O2 Sensor. I replaced it, and no change. A Diagnostics test with Fuel Pressure Check is next, but not sure what that will show if anything???