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Why would the heater on your 1988 mercury topaz not give you warm air unless it has been running for 30 minutes?

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Answered 2007-03-25 10:06:01

First and foremost, check your coolant levels. If you have insufficient coolant, you'll get heat but only after a long time. It could be a heater core problem, or a plugged line but low coolant is a common cause. First and foremost, check your coolant levels. If you have insufficient coolant, you may still get heat but only after a long time. It could be a heater core problem, or a plugged line but low coolant is a common cause. There should be a coolant reservoir under the hood, it will have some markings on it indicating hot and cold coolant levels. If that is empty that is a good indicator that you may have low coolant.

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