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Why does the heater work intermittenly on a 99 Mercury Cougar?
Wiki User
∙ 14y ago
What you may be experiencing is a blown resistor. If the heater only works when on 4, but not 3, 2, or 1, then it is most definitely the answer. If it is, there is plenty of info on this at newcougar.org.
Wiki User
∙ 14y ago
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