A 1997 Saturn SC1 stalling while driving and not starting until it cools off can be caused by various issues. Here are some common possibilities to consider:
Ignition System Issue: A failing ignition coil, ignition control module, or crankshaft position sensor can cause intermittent stalling and failure to restart until the engine cools down. When these components overheat, they can temporarily fail and prevent the engine from running.
Fuel Delivery Problem: Issues with the fuel pump, fuel filter, or fuel pressure regulator can lead to fuel delivery problems, causing the engine to stall. If the fuel pump is overheating or experiencing intermittent failure, it might not provide sufficient fuel pressure to keep the engine running.
Coolant Temperature Sensor: A faulty coolant temperature sensor can cause incorrect readings to the engine control module (ECM), leading to improper fuel mixture and stalling.
Air Intake or Vacuum Leak: An air intake leak or vacuum leak can disrupt the air-fuel mixture, affecting the engine's performance and causing stalling.
Faulty ECM: The engine control module itself might be malfunctioning, causing intermittent issues with fuel and ignition management.
Electrical Wiring Problem: Faulty or damaged electrical wiring can lead to intermittent electrical issues, which might contribute to stalling and other problems.
The fact that the battery dies soon after the car stalls suggests there might be a significant electrical drain. This could be related to the stalling issue or may indicate an unrelated problem, such as a parasitic electrical draw.
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Friday, October 22nd, 2010 AT 8:50 PM