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willie ... 1/18/2013
1998 Lincoln Town Car Signature 8 Cyl 4.6L - Preventive Maintenance
my heater has a knocking like a belt is broken
1 Answer
  • Jimm
    Jimm 1/19/2013
    Need more information - what is the knocking? Does the sound originate from the heater fan motor on the interior? The heater system has no moving parts - only coolant circulating through a small heater core to provide the heat. The only associated movement would be either the heter / blower fan, or the heater blend door built into the instrument panel to control to flow of the warmed air.

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