Idle Speed: Adjustments
BASIC IDLE SPEED ADJUSTMENTNOTE: Before adjusting check that the spark plugs, injectors, idle speed control motor, compression, etc.. are normal and clean the throttle body.
Adjustment Conditions:
1. Engine coolant temperature is 80° to 95°C (176° to 205°F).
2. Lights, electric cooling fan, and all electrical accessories off.
3. Transaxle is in neutral ("P" or "N" for automatic transaxle vehicles).
4. Steering wheel is in a straight forward position (vehicles equipped with power steering).
Adjustment Procedure:
1. Loosen accelerator cable.
Hyundai Multi-use Tester:
2. Connect the scan tool to the data link connector in the fuse box.
3. If the scan tool is not used connect a tachometer and ground the data link connector.
4. Ground the ignition timing adjustment terminal
5. Run the engine for more than 5 seconds at an engine speed of 2,000 to 3,000 rpm.
6. Run the engine at idle for 2 minutes.
7. Check that the engine rpm is within the standard value. If the scan tool is used press code 22 and read the engine rpm.
Basic idle speed: 750 ± 100 rpm
NOTE: The engine speed on a new vehicle driven less than 500 Km (300 miles) may be 20 to 100 rpm lower than specification, but no adjustment is necessary. If the engine stalls or the engine speed is low after the vehicle has been a distance of 500 Km (300 miles) or more a deposit on the throttle valve area is suspect.
Idle Speed Adjusting Screw:
8. If the basic idle speed is out of specification adjust by the speed adjusting screw for the standard rpm. In adjusting use a tachometer.
NOTE: If the idle speed is higher than specified even with the speed adjusting screw fully closed check whether the idle switch moving mark exists or not. If it is found that the switch has moved adjust the idle switch.
9. Turn the ignition switch to the OFF position.
10. If the scan tool was not used disconnect the data link connector.
11. Disconnect the lead wire from the ignition timing adjusting terminals.
12. Run the engine again and let it idle for about 10 minutes. Check that the engine is in normal idling condition.