Cold Fast Idle Too Low

Check Idle Air Control (IAC) valve for proper operation. See appropriate DTC in TESTS W/CODES article.
Check fast idle thermo valve. See SYSTEM/COMPONENT TESTS article.
Check idle speed adjustment. See ADJUSTMENTS article.
Check Intake Air Temperature (IAT) sensor. See appropriate Diagnostic Trouble Code (DTC) in TESTS W/CODES article.
Check air cleaner.