Quote:
Originally Posted by originalowner
That probably means that your supplementary air valve is working perfectly. This valve allows extra airflow during cold start operation, and slowly closes as the engine warms up.
Your idle would be slower cold if it was not working.
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So…with the supplementary valve working correctly, should the engine cold start at a higher RPM then adjust lower when the engine warms up? My car’s RPM starts and stays the same RPM all the time.