Heater Core Inspection
WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the heater core for damage, cracks, and water leakage.
- If there is any malfunction, replace the heater core.
- Visually inspect the fins for bending.
- If there is any bending, use the end of a flathead screwdriver to straighten the fins.
- Visually inspect the heater hose for deformation.
- Repair with pliers if there is deformation. If there is any malfunction, replace the heater core.