Engine Starts Then Dies When Cold
The engine starts but stalls shortly after, especially when cold. This suggests a fuel delivery, air intake, or sensor issue that prevents the engine from maintaining idle after startup.
Diagnosis Details
Possible Causes
Faulty idle air control valve or throttle body carbon buildup
Weak fuel pump or clogged fuel filter causing low fuel pressure
Faulty engine coolant temperature sensor providing incorrect cold-start enrichment
Related OBD-II Codes
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What You Should Do
Check for diagnostic trouble codes using an OBD-II scanner.
Inspect and clean the throttle body and idle air control valve.
Test fuel pressure and replace fuel filter if low.
Verify engine coolant temperature sensor readings with a multimeter.
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.
