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There is no short cut or fast way to do this. The dash has to come out to access the heater box and replace the core. So the steps in replacing the heater core are to disconnect the heater hoses, remove the dash, to access the heater box assembly and remove the box. The box then has to be opened up and the core is replaced. Reassembly is in the reverse order as disassembly. Fill the cooling system with new coolant, and burp the air form the cooling system.

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Q: You need step by step help in replacing the heat core in a 91 crown Victoria?
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