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Jeep liberty thermostat 02 3.7l 6cyl

Heater works at idle.temperture gauge drops to cold when driving and blows cold air.

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  • 19 Answers

Is it low on coolant? Did you just replace anythig in the coolant system?

Posted on Dec 25, 2013

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Posted on Jan 02, 2017

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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

  • 1 Answer

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.

XRM

Posted on Feb 18, 2009

mister_b_65
  • 74 Answers

SOURCE: heater on2002 Jeep liberty wont stay warm unless its moving



Check to see if the coolant level is low.






Posted on Dec 13, 2009

  • 714 Answers

SOURCE: My 2005 Jeep Liberty will not blow heat through

heater valve if you have 1 ,or temp control actuator which is under the dash and takes hours to replace!

Posted on Jan 30, 2010

  • 115 Answers

SOURCE: my 2002 jeep liberty heater blows cold air when it

Coolant level could be low. Might need a new thermostat. If the coolant level is low you likely have other issues. Check back here if that's the case. I hope this helps..

Posted on Mar 15, 2010

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2005 jeep liberty blows cold air through the heater.


Either you are low on coolant and there is air in your heater core, or the thermostat isn't working properly, or your water pump is going out.

Dec 13, 2014 | 2005 Jeep Liberty

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Heater blows cold air and the temperature guage reads cold after driving for 20 minutes


Best case scenario is your thermostat is stuck open. When this happens the engine will take a long time to warm up and will never get up to full temp. Worst case could be a serious problem such as a blown head gasket. If there is no coolent in the engine the temp gauge will not register either.

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2005 jeep liberty blows cold air through the heater.


could be the thermostat if it was just stating to go bad,could also be a vacume problem not letting the door for the ac/heat close all the way for a few min.and if its really cold out like below 35,then its going to take longer to warm up,my jeep takes like around 20 min at idle to warm up.yours could be a case of over cooling in cold weather too ie(electric fans on before it warms up)that would be the thermostatic sensor.

Dec 01, 2011 | 2005 Jeep Liberty

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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

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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.

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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

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