Component Inspection

Engine Control
P0128 Coolant Thermostat (Coolant Temperature below Thermostat Regulating Temperature) - Inspection/Repair:_:Component Inspection

Component Inspection

1. Remove the thermostat and check the following items:
(1) Stuck or damaged
(2) Verify the temperature at which the valve is open
- Valve opening temperature : 82°C(177°F)
- Full opening temperature : 95°C(205°F)
2. Is the thermostat noraml ?