Engine Stalls After Starting
Asked by GuruDD59N6 Sep 19, 2023 at 12:42 PM about the 1992 Oldsmobile Custom Cruiser 4 Dr STD Wagon
Question type: Maintenance & Repair
I have a 1992 Oldsmobile Custom Cruiser (5.0) that will stall right after starting. It starts fine, and either briefly runs rough before stalling, or stalls immediately.
This is a new issue, as I replaced the battery last week and it ran fine then (and every other time).
Giving it gas doesn't help keep it running, and will cause it to stall quicker vs not giving it gas.
*Vehicle Image is not my own vehicle, just a reference image
4 Answers
The Mass Airflow Sensor measures air entering the engine and relays this to the car’s computer so it can meter the amount of fuel delivered from the injectors. When the sensor fails, fuel delivery is impaired and often the engine dies soon after starting. A defective Idle Air Control Valve produces the same result during start-up. The Fuel Pump Relay works similarly and when defective, it can't control the pump properly during the start-up process, so the engine will die immediately after it starts. Other defects that could cause an engine to die right after it starts are, a failing crankshaft or camshaft position sensor, a severe vacuum leak, a faulty ECM, or anything that impedes proper spark. Timing can also be an issue with a worn belt. It's best to have OBD codes read and follow what shows up, or you could be searching for a long time.
The Mass Airflow Sensor measures air entering the engine and relays this to the car’s computer so it can meter the amount of fuel delivered from the injectors. When the sensor fails, fuel delivery is impaired and often the engine dies soon after starting. A defective Idle Air Control Valve produces the same result during start-up. The Fuel Pump Relay works similarly and when defective, it can't control the pump properly during the start-up process, so the engine will die immediately after it starts. Other defects that could cause an engine to die right after it starts are, a failing crankshaft or camshaft position sensor, a severe vacuum leak, a faulty ECM, or anything that impedes proper spark. Timing can also be an issue with a worn belt. It's best to have OBD codes read and follow what shows up, or you could be searching for a long time.
Check your battery cable connections. Make sure everything is clean and tight. Put Vaseline on the battery terminals to prevent corrosion. Hope that helps! Jim
