Question about 2003 Jeep Liberty

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Heater core on a 2003 jeep liberty limited

Where is it? its not my car and im going to check it out for my friend, havent even looked for it but i figure someone will know. im doing this because the heat is not working unless you are accelerating.

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Sound like th efan is not working, not the heater, acceleration cause the air to move through the vent, so if the fan is not working, there is nothing to move the air, even the heater is working.

Posted on Jan 07, 2009

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Heater core


engine and year, good. a first here...
my guess, its AF , antifreeze , smell it? sickening sweet. bingo
the core is leaking, look for Green AF at passengers foot
and under car, at A/C drip tube....
if im right its a big job.
change AF every 2 years, and this will never happen again.
ive run jeeps for 250k miles, many; and not one ever blew a core.
heater core.
All AF goes to ACID as it ages , and eats the core to death.
8hr labor too.

Jan 30, 2014 | Jeep Liberty Cars & Trucks

1 Answer

How can I fix my 2003 Jeep Liberty Limited when the heater will not blow hot air


easy. its just a few checks.
1: engine must be at 180F or more, Scan tools are best here.
2: the blower must at least work at full speed on high.
3: the air must flow through the heater core, or there will be no heat.

#3 can fail if the dampers are stuck. the FSM covers this in great detail
as does. alldata.com. log in and read.

Jan 04, 2014 | Jeep Liberty Cars & Trucks

1 Answer

Heater Core replaced now Part Time light on dash won't go off.


yes and id take it back to shop that did repair and tell em the it wasnt on before repair, any reputable chop will look at it and repair if its their fault

Sep 26, 2012 | 2003 Jeep Liberty

1 Answer

Heater on 03 jeep liberty blows hot air only when motor is revved and cold air at traffic lights


oneor two things low coolant in radiator or poor flow through heater core . if motor is at normal running temp. and coolant full , then heater core needs flushed, check coolant in radiator first....

Dec 05, 2011 | 2003 Jeep Liberty

1 Answer

Where is the heater core and hoses located on a 2002 jeep liberty?


The heater core is located on the passengers side of the vehicle inside the air box. Dash removal is necessary to replace the heater core. You should see two rubber lines going into the firewall around the upper corner on the passengers side.

Mar 25, 2011 | 2002 Jeep Liberty

2 Answers

My 2003 Jeep Liberty heater is blowing cold air when idling. Warms up when you hit the accelerator. I also hear a water rolling sound upon take off after idling. Water pump? Heater Core?


Water level perhaps. When you hit the accelerator the water volume increases. Check your water level and make sure that your thermostat is opening and closing properly. Water level I'm thinking

Jan 21, 2011 | 2003 Jeep Liberty

2 Answers

I have a 2002 Jeep Liberty Limited, 3.7 L motor. The heater will not blow hot air. The A/C and fan work well. When I turn the temperature dial to hot, there is only cold air coming out. Can you assist me?


Jeeps are notorious for having broken temperature control (Blend Air) doors. A malfunctioning Blend Air Door actuator probably caused it to break. The dash will have to be removed to replacethe door and the door actuator.

Jan 16, 2011 | 2002 Jeep Liberty

1 Answer

I smell antifreeze through the heater vents in my 2002 jeep liberty.Its just smells for an instant then goes away.I know these heater cores have crimpt on ends and may be leaking there.its a pain to...


you could also be developing a heater core leak. if you start seeing fluid on the carpet or windows fog on the inside when defrosters are on, you got trouble. better to fix the problem now then in the middle of winter.

Oct 22, 2010 | 2003 Jeep Liberty

1 Answer

Jeep Liberty 2002 heater does not work when engine is ideling


Check anti-freeze level and thermostat first.If not, there's some electronic/computer/sensor ********! I once replaced a heater core in a friends car only to find out she was low on anti-freeze the whole time but not enough to send an alarm or blinking light. You can have flucuations in heat when engine exurts pressure wi'll driving and while idling.

Feb 16, 2010 | 2002 Jeep Liberty

2 Answers

My 2003 Jeep Liberty Limited Edition blows out cold air while im stopped at a light or stop sign or whatever. But as I drive it will blow out warm air!! Can someone please help me with this problem!!!!


Yea, theres an air bubble in your coolant system. Check your coolant level, and top off the fluids.

When your jeep is going down the road the water pump is cycling the coolant, but when you are idling there isnt enough spin on the water pump to push enough coolant to compensate for the air in the system

Dec 07, 2009 | Jeep Liberty Cars & Trucks

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