Cold Fast Idle Too Low

Check idle speed adjustment. See ADJUSTMENTS article.
Check Idle Air Control Valve (IAC). See Diagnostic Trouble Code (DTC) in TESTS W/CODES - INTRODUCTION article.
Inspect/adjust throttle cable. See ADJUSTMENTS article.
Check air cleaner element.
Check Intake Air Temperature (IAT) sensor circuit. See Diagnostic Trouble Code (DTC) in TESTS W/CODES - INTRODUCTION article.
Check Fast Idle Termo Valve for proper operation. See SYSTEM/COMPONENT TESTS article