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To replace the heater core on the 83-87 Prelude with A/C The center console and the upper dash will be removed, This is not a job for the novice.If you have a Prelude without A/C the heater core can be removed simply by removeing the heater control valve which is under the hood behind the engine against the firewall, Then under the dash you will find the hose connections to the heater core entering thru the firewall, remove the clamps from the hoses, remove the t-bracket retaining screw and bracket that hold the heater core tubes to the control box, remove the screws that retain the heater core hose cover then slide the heater core from the control box and reinstall in reverse order.You can view a picture of the unit at [url]http://www.slhondaparts.com/browse.asp?Model=PRELUDE&Year=1985&TrimLevel=2DR+DX&TransLevel=5MTKL&Section=E&Category=B++1702%7CHEATER+UNIT&Doors=2&Emissions=KL&PartCatalogId=13SB00&ViewParts=true [/url] this link is for an 85 but they are basically the same.

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โˆ™ 2015-07-15 21:17:20
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Q: How do you replace the heater core in a 1986 Honda Prelude?
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