Engine Starts Then Dies Immediately
The engine starts but stalls right away, indicating a fuel, air, or ignition issue that prevents sustained running.
Diagnosis Details
Possible Causes
Faulty fuel pump or clogged fuel filter – not delivering enough fuel pressure to keep the engine running.
Malfunctioning crankshaft or camshaft position sensor – causing the ECU to lose timing signal after start.
Vacuum leak or dirty throttle body – disrupting the air-fuel mixture at idle.
Related OBD-II Codes
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What You Should Do
Check fuel pressure at the rail; if low, test the fuel pump relay and pump.
Scan for trouble codes, especially related to crank/cam sensors.
Inspect for vacuum leaks and clean throttle body if needed.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
