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Repair guides and support for the Expedition, a full-size SUV based on Ford's F-150 pickup truck. Closely related to the Lincoln Navigator.

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Air conditioner has bad oder

When I turn on air conditioner it smells bad even worse when I turn on heater. Also some type of oil pooling on floorboard driver's side.

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Try tracing the "oil" back to its source. Fix the leaking device and then go from there to determine if it is associated with the smell.

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1 Answer

The A/C coolant may be leaking! Also, there may be mold/mildew in the pipes, which would explain why it stinks. Probably is located in the heater core, since you state it gets worse when the heater is on. Go to an A/C specialist and ask if they can clean it out.

Good luck!

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