Special Tool(s) / General Equipment
A/C Odor Remover Flexible Applicator |
Materials
Name | Specification |
---|---|
Motorcraft® A/C Cooling Coil Coating YN-29 |
- |
Inspection
NOTE: There are typically 4 types of objectionable odors found in a vehicle:
NOTE: Chemical odors are usually constant regardless of the climate control system setting although they may be enhanced by A/C operation. Most chemical odors are caused by fluid leaks or incorrectly cured adhesives. Chemical odors can be eliminated by repairing the leaking component and removing any residue.
NOTE: Environmental odors usually occur for a short time and diminish after the vehicle passes through the affected area. These odors are typically only detected when the vehicle windows are open, or when the climate control system is operating in a mode that allows for fresh air. Environmental odors cannot be eliminated because they are external in source, but they may be minimized by switching to a climate control setting that uses recirculated air.
NOTE: Human and other interior-generated odors occur while the source is present and may linger for a short time after. These odors may be more noticeable during A/C operation. Human odors may be eliminated by removing the source and cleaning the affected area.
NOTE: Microbiological odors, if in the A/C system, usually last for about 30 seconds after the system is turned on. They are detected while the A/C is turned on and using either outside or recirculated air. Microbiological odors that occur in areas other than the A/C system (for example, water in doors or wet carpeting) may last indefinitely and are more intense when recirculated air is used. Microbiological odors are not present at temperatures at or below 10° C (50° F).
Microbiological odors can be eliminated by removing the source and treating the affected area. Allow standing water to drain and dry out. A/C systems may be treated by using Motorcraft® A/C Cooling Coil Coating (YN-29) as described in the service procedure below.NOTE: Microbiological odors result from microbial growth supported by warm temperatures and moisture. Microbiological odors are described as musty/mildew type smells and may occur on/in:
Odor Source | Odor Description |
Chemical Odors | |
Coolant | Sweet smell |
Fuel | Gasoline or diesel fuel smell |
Oil | Oil type or burning smell |
Power Steering Fluid | Oil type or burning smell |
Transmission Fluid | Oil type or burning smell |
Washer Fluid | Alcohol type smell |
Gear Lube | Garlic/sulfur smell |
Refrigerant Oil | Ether type smell |
Carpet/trim Adhesives | Fishy, urine or sweet smell |
Evaporator Core Coating | Wet cement type smell |
Environmental Odors | |
Exhaust | Exhaust, fuel or burning type smell |
Industrial Pollutants | Various smells |
Dust | Musty, mildew or wet cement type smell |
Pollen | Sweet smell |
Tobacco | Burning, tar smell |
Human and Other Interior Generated Odors | |
Body Secretions | Body odor |
Perfuming Agents | Sweet or fragrance smell |
Clothing | Musty, mildew or body odors |
Food/Beverage | Sweet, musty, mildew or fishy smell |
Microbiological Odors | |
Microbiological Odors Occurring Inside of A/C System | Musty, mildew smell lasting about 30 seconds after A/C is turned on |
Microbiological Odors Occurring Outside of A/C System | Musty, mildew smell lasting indefinitely and possibly more pronounced when using recirculated air |
Repair
NOTE: Identify the source of the odor.
NOTICE: To avoid damage, do not spill or spray this product on the blower motor speed control.
Remove the blower motor speed control. Refer to the appropriate section in Group 412 for the procedure.NOTICE: To avoid damage to the vehicle interior, do not spill or spray this product on any interior surface.
NOTE: Only Motorcraft® A/C Cooling Coil Coating (YN-29) is approved for use on Ford vehicles. No other coating is approved. Use of other coatings may cause damage to the factory coating and more odor issues.
Add one full bottle of Motorcraft® A/C Cooling Coil Coating (YN-29) to the A/C Odor Remover Flexible Applicator tool.WARNING: Airbags can kill or injure a child in a child restraint. Never place a rear-facing child restraint in front of an active airbag. If you must use a forward-facing child restraint in the front seat, move the seat upon which the child restraint is installed all the way back.