gas not diesel right?
what engine? option? size?
there are only 3 causes (and many parts to fail)
- engine coolant not hot at 180F or more.
- said coolant not flowing Through heater core (feel the 2 hoses?)
- air not flowing over heater coil. , damper stuck closed?
once the above is found.we can diagnose why?
the FSM covers all this , in the HVAC chapter.
say engine is hot, and core is hot.
you check the damper and its stuck closed.
?
1: controls not telling damper to move. (falling)
2: damper motor bad. (called the HVAC acuator by jeep)
on this new of car, we must scan it, the scan tool that supports
jeeps will set HVAC errors aplenty.
my innova 3160 can do that.
my FSM dont do that new a car.
or
engine not hot
heater core not hot
or damper door stuck closed on core, blocking heat.
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