| Component | Maintenance | Malfunction | Causes | Remedies |
|---|---|---|---|---|
| Heater | Flush system when antifreeze requires change. | Plugged, poor heat, leaks, drips on floor, mist on window. | Over pressurize; electrolysis, normal wear; insufficient flushing; hose connection; thermostat; plugged; vent door jammed; broken cable; vacuum lost or low coolant. | Boil out, rod out, recore or replace heater. Replace thermostat; adjust airflow; repair or replace other defective components. |
| Control Valve | Inspect for leaks. | Leaking or plugged. | Debris in system or normal wear. | Replace. |
| Heater hose | Inspect clamps; inspect for water logged hose or hardness and cracking | Leaking joint. | Age oil contamination; loose hose clamp. | Replace, flush system. |
We stock 100 different heaters at Island Radiator, Also cores for the one we don’t have.