Question about 2011 Jeep Liberty
Gas not diesel right?
what engine? option? size?
there are only 3 causes (and many parts to fail)
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.
engine not hot
heater core not hot
or damper door stuck closed on core, blocking heat.
Posted on Mar 21, 2014
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Posted on Jan 02, 2017
SOURCE: Heater blows cold air when idle
Sounds like you may have a partially plugged heater core. You could flush this out separately, from flushing radiator & engine block. Diconnect heater hoses going to your heater core and clamp off, so not to loose coolant from engine. Now hook up separate hose to one side of heater core pipe and flush out with typical garden hose. Repeat procedure on both heater core inlets. Reconnect original heater hoses and test difference. You may have to add an additional litre of antifreeze. If this don't work i suggest changing heater core. Good luck.........Ron.
Posted on Jan 03, 2009
SOURCE: Heater blows cold air
If the "Heater In Hose" gets hot, and the "Heater Out Hose" does not get hot, than either the Control Valve is sticking closed, or your heater core is plugged up with ****!
Have you used "Barrs Leak" or a simular product for a radiator leak? That will sometimes clog the heater core.
I have a 1993 Grand Cherokee, which "Normally" throws very hot air out of the heater, but lately sometimes it only throws warm air, till I make my first stop, than it gets hot.....all because the heat control valve is hanging up.
Low water in the radiator will also cause a heater to not work.....if the water level is too low to circulate to the heater.
Posted on Feb 18, 2009
SOURCE: heater blows cold air
the electric motor that open the heat door looses electrical connection there by the door stays on cold / it is located under the a/c heater assembly / which requires removing the whole dash and heater assy// also bleed all air out of coolant system
there are three doors / 1/ a/c heat 2/ mode /defors 3/ recurculation email@example.com
Posted on Sep 11, 2009
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