Engine Starts Then Dies Immediately
The engine cranks and starts but stalls right away, indicating a fuel, air, or security system issue. This pattern is consistent across all attempts.
Diagnosis Details
Possible Causes
Faulty fuel pump or fuel pressure regulator not maintaining pressure after start
Clogged fuel filter restricting fuel flow
Immobilizer or anti-theft system malfunction preventing engine run
Mass airflow sensor or vacuum leak causing incorrect air-fuel mixture
Crankshaft or camshaft position sensor failure
Related OBD-II Codes
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What You Should Do
Check fuel pressure at the rail; should be 44-50 psi.
Listen for fuel pump prime when key is turned ON.
Inspect for security light flashing (immobilizer).
Scan for trouble codes.
Clean MAF sensor and check for vacuum leaks.
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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.
