Note: Before adjusting the speed x.x. check the following items:
- The MIL lamp does not light up.
- Ignition advance
- Spark plug
- Air filter
- PCV system
1. Connect a tachometer.
2. Start the engine. Maintain the rpm at 3000 rpm with no load until the radiator fan comes on, then let it idle.
3. Check the idle speed. no load: headlights, fan, rear defroster, radiator fan and air conditioning are not working.
Turnover x.x. must be:
Except KU model:
ITUC | 750±50 rpm |
AKP | 700±50 rpm (in position N or P) |
Model CU:
ITUC | 670±50 rpm |
AKP | 700±50 rpm (in position N or P) |
4. If necessary, adjust the idle speed by turning the adjusting screw 1/2 turn clockwise or counterclockwise.
5. After turning the adjusting screw 1/2 turn, check the idle speed again. if they are still different from normal, turn the screw an additional 1/2 turn.
Note: Do not turn the adjusting screw more than 1/2 turn without checking the idle speed.
6. Let the engine run for one minute with the heater fan on (in HI position) and air conditioning, then check the idle speed.
Turnover x.x. must be:
ITUC | 810±50 rpm |
AKP | 810±50 rpm (in position N or P) |
Note:
- Do not turn the adjusting screw when the air conditioner is running.
- If the speed x.x. are different from normal, see the system troubleshooting guide.