Irregular Idle

SYMPTOM: Fast Idle Out Of Spec When Cold

CHECK
1. Electronic Control Unit (**)
2. Electronic Air Control Valve (14)
3. Other Idle Controls
4. Coolant Temperature Sensor (6)

Numbers in parentheses are the blink codes displayed on back of the ECU.
(**) LED on the ECU is not on, or stays on without blinking. Notes on Reading Diagnostic List For ECU trouble code component testing procedures see Computers and Control Systems.