Question about 1990 Mercury Grand Marquis

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Heater core I have a 1990 grand marquis and i need to replace my heater core but i can't find it any help would be appreciated

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It is a big job.  I had to move my dash aft several inches to access the heater core.  Lots of disassembly.  Chiltons, all data, or any manual are a big help.

Posted on Feb 28, 2009

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