Mechanics

LINCOLN NAVIGATOR HEATER PROBLEM

2001 Lincoln Navigator • 218,000 miles

What is the procedure to flush the heater core?
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Guest
November 18, 2012.



To really flush it clean you can remove the 2 heater core hoses where they enter and exit the engine. The you can find the inlet by looking for the heater core valve near the firewall. Set the heat all the way to the hottest setting. Then put a graden hose up to the inlet hose and let it flush until clean water comes out of the outlet hose.