- Low coolant level: Check coolant reservoir.
- Broken or disconnected hose: Look for leakages.
- Faulty thermostat: Stuck close, it causes engine to overheat.
- Fan issue: Electrical/mechanical fan might not be spinning properly.
- Faulty water pump: It's responsible for circulating the coolant.
Possible causes for cold air from heater:
- Blend door actuator (motor) fault: It controls the mix of hot/cold air.
- Insufficient engine heat: Engine might be overheating.
- Blocked heater core: Debris buildup obstructs coolant flow.
- Control panel error: May not correctly select hot air setting.
Perform diagnosis to identify the exact issue. Check coolant levels with engine off (and cool) to eliminate low coolant level as the cause. Ensure your fans or water pump are working correctly. For the cold air issue, verify actual engine temperature matches the temperature indicator. It's advisable to consult a professional for further diagnostics and repairs as necessary.
