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What would the problem be if all of the ac blows through the defroster vents not through any of the dash or lower vents and how do you fix it?
Wiki User
∙ 17y ago
It sounds like there is a vacuum leak. Check under the dash for any small hoses not attached and then look under the hood for any. The hoses should be small and grey or black.
Wiki User
∙ 17y ago
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I solved the problem myself. The answer was so obvious I overlooked it. It turns out I was low on coolant. The vehicle's coolant overflow tank was full but malfunctioning, which led me to believe the radiator was full. In fact, the radiator was about a gallon low. also check the thermostat may be stuck
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