Question about 2004 Jeep Liberty

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What causes smoke to come through the vents on a 2004 Jeep Liberty 5 speed manual 3.7L engine?

The thermostat guage is reading halfway. It don't seem to be running hot. But I can smell a funny smell.

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  • paulmacintyre
    paulmacintyre Apr 11, 2015

    It will not run hot on the temp guage. The heater core is inside the vehicle and coolant passes through it to provide your heat. A small leak will result in whisps of sweet smelling steam/amoke to come through the vents. If on defrost on high heater speed and the windshield fogs up, it will be a leaky heater core

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  • Jeep Master
  • 3,218 Answers

It will most likely be whisps of steam you see through the vents often accompanied with sweet smell. The heater core is usually the culprit and is leaking. Any coolant stains/wet marks on the passenger floor. Does the windshield fog up when on defrost. All signs of a leaky heater core

Posted on Apr 11, 2015

  • Beverly Purser Apr 11, 2015

    It's not wet anywhere and the smell is not antifreeze. So any idea what else could be wrong?

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