Some Honda Prelude owners report experiencing engine failure while in traffic due to several potential issues. These include stalling, which may be linked to a crankshaft code detected in an OBD scan. Additionally, some owners find that their engine shuts down unexpectedly at stoplights, possibly due to an automatic feature that may need to be manually deactivated. Engine whine has also been reported, often associated with front bearing failure in the alternator, which can be resolved by replacing the faulty bearing or the entire alternator. Owners are advised to have trouble codes read if the check engine light is illuminated, as this can help identify specific problems. A failing Engine Control Module (ECM) may also prevent the engine from starting, making proper diagnosis essential. Regular maintenance, such as changing the O2 sensor when necessary, is recommended to prevent unexpected issues. Furthermore, maintaining consistent engine RPM during highway driving can help identify underlying problems, ensuring smoother operation and potentially preventing unexpected shutdowns.
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