Question about 1981 Ford F 150
You may have a problem with the coolant passages in the intake manifold clogging. also i have seen intake gaskets installed incorrectly causing coolant circulation to be impaired/ check for air pockets
Posted on Jul 06, 2009
What about an block,clogged heater core.Check it out.
Posted on Jun 26, 2009
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Posted on Jan 02, 2017
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