Mazda Protege starts but will not stay running on Mazda Protege

Some Mazda Protege owners report experiencing issues where the engine starts but will not stay running, which may be attributed to several underlying problems. Low fuel pressure is often cited as a potential cause, prompting owners to check that it is at the correct level. Additionally, a faulty or unplugged crankshaft position sensor can lead to stalling after starting, making it crucial to ensure the sensor is properly connected. Some owners also report that a malfunctioning engine coolant outlet water temperature sensor can cause stalling, although the engine may still start and trigger a check engine light. Ignition system issues, including problems with spark plugs, ignition coils, or a malfunctioning fuel pump, are also common culprits that should be inspected. Furthermore, a restricted exhaust system can prevent the engine from staying running, with some owners finding improvement by testing the exhaust flow through the upper O2 sensor. For persistent issues, it is advisable for owners to consult a mechanic or Mazda specialist for further assistance.