Cold Start Stalling Issue
The engine starts but immediately dies when cold, indicating a fuel or air delivery problem that resolves as the engine warms up.
Diagnosis Details
Possible Causes
Faulty engine coolant temperature sensor (ECT) sending incorrect cold-start enrichment signal
Idle air control valve (IAC) or throttle body carbon buildup restricting air at cold idle
Fuel pressure regulator or fuel pump check valve losing prime, causing low fuel pressure on cold start
Related OBD-II Codes
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What You Should Do
Have a mechanic scan for diagnostic trouble codes, test the ECT sensor resistance at cold temperature, clean the throttle body and IAC valve, and check fuel pressure during a cold start.
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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.
