For 1990-2009 cars

Table 1: | Musty Smell
Table 2: | Coolant Smell
Table 3: | Refrigerant Oil Smell

#### Musty Smell

Problem | Action
--- | ---
Water leaks in the body are present. | Seal the body.
The evaporator drain is dirty or clogged. | Clean the evaporator drain.
Mold or mildew is present in the evaporator¹. | Clean the evaporator.
¹ A musty odor will develop under certain climate and operating conditions. The musty odor is caused by microbial growth in the evaporator core. This odor is usually temporary. As a climate conditions change, the musty odor will usually disappear. If the odor persists, clean the evaporator core using an appropriate cleaner. Refer to Odor Correction .

#### Coolant Smell

Problem | Action
--- | ---
The heater core is leaking. | Replace the heater core. Refer to Heater Core Replacement .
The heater core pipes or hoses are leaking. | Replace the heater pipes or hoses. Refer to the appropriate procedure:

• | Heater Inlet Hose Replacement

• | Heater Inlet Pipe Replacement

#### Refrigerant Oil Smell

Problem | Action
--- | ---
The evaporator is leaking. | Replace the evaporator core. Refer to Air Conditioning Evaporator Core Replacement .