1) Coolant Leak: If there is a leak in the coolant system, it can cause coolant to enter the cabin of the vehicle through the heater core. When the heater is turned on, the hot coolant can vaporize and release harmful chemicals into the air, causing respiratory issues.
2) Mold or Mildew: If the heater core is not properly maintained or if the vehicle is driven in humid conditions, mold or mildew can grow inside the heater core. When the heater is turned on, the spores of mold or mildew can be released into the air and cause respiratory irritation.
3) Faulty Cabin Air Filter: If the cabin air filter is clogged or dirty, it can restrict the flow of fresh air into the cabin of the vehicle. This can cause a buildup of stale air and contaminants, leading to respiratory problems.
4) Exhaust Gas Leak: If there is a leak in the exhaust system, exhaust fumes can enter the cabin of the vehicle through the heater vents. These fumes can cause headaches, dizziness, and other respiratory issues.
If you are experiencing respiratory issues when using the heater or defroster in your Ford Contour, it is important to have the vehicle inspected by a qualified mechanic as soon as possible to identify and fix the cause of the problem.
