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125 No heat




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This article is from the Chrysler-Plymouth-Dodge FAQ, by Dr. David Zatz with numerous contributions by others.

125 No heat

Daniel Thomas writes:
[Dealers tried] everything from flushing out the cooling system,
replacing thermostat, replacing heater core, replacing blower motor,
etc. The REAL cause of the problem turned out to be the "automatic
ajjustment" cable on the hot air door. This is the door which allows
the incoming air to go across the heater core to provide heat into the
interior of the van. The damn thing had misadjusted itself a number of
times. The service manuals recommend a way to adjust the door to work
correctly but it isn't always successful even when it appears to be done
correctly. The door must be opened wider than the recommendation
implies then the heat lever is forced to the cold position. This
automaticially readjusts the cable connection to allow the door to open
wider which forces more (all) cold air across the heater core. The
secret is in the adjustment and almost going by the book. I have
personally been successful in fixing a number of vans that didn't give
out enough heat. The job is easy once you figure it out.


 

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