Question about 1989 Jeep Cherokee
Blower works fine,changed thermostat, checked airflow control operating fine.
Under the hood on the pass. side firewall are two heater hose lines.
Start the car and let it get at normal operating temp. One of the hoses
is the "in" to the heater core, if you touch it it should be hot. The
other hose is the "out" of the heater core, this hose should be warm
and not really hot like the "in" hose. If the hose going in is hot and
the other cold, then your heater core is clogged. There is a valve
connected inline with one of the heater hoses, this is the heater
If the valve does not open, you will not have any heat either.
Posted on Dec 10, 2008
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Posted on Jan 02, 2017
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