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Why does your 1999 F 150 Ford truck v8 blow out partially warm air?
Wiki User
∙ 13y ago
Could be a number of things starting with is the truck operating at normal temperature? If not may have a bad thermostat. Is the antifreeze level correct? Check it with engine at normal temperature running engine. If the overflow tank is empty, add enough to bring it to the hot engine line, recheck after a few minutes and add more if necessary. It's also possible that you have a plugged heater core, or a bad temperature control panel or heater resistor. Good luck .
Wiki User
∙ 13y ago
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