Question about 2003 Jeep Liberty

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Heating problem car overheated on highway changed water pump, fan clutch, and thermostat. car was fne then I was on the highway again and it over heated and had no heat and lower hose wasnt getting hot but all others were hot. changed radiator and now still no heat and lower hose isnt getting hot any Idea??

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  • megsjewel04 Jun 01, 2009

    this is my 2nd thermostat, the spring goes in the motor right?

  • Dennis Mulford
    Dennis Mulford May 11, 2010

    yes the spring goes toward the motor,you may then have a blockage did you change the lower hose it may be colasped inside

  • Dennis Mulford
    Dennis Mulford May 11, 2010

    this may sound stupid, but did you by chance put the thermostate in backwards? ive seen it happen before on these

  • chryslerguy May 11, 2010

    Did you bleed the air out of it through the pipe plug fitting at the upper hose?



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If you changed the thermostat yourself and have noted that the lower radiator hose is cooler than the upper radiator hose, you may have installed the thermostat incorrectly or have purchased a faulty thermostat. A lower radiator hose that does not get hot (or as hot as the upper radiator hose) is a direct indication of a faulty thermostat. Please vote for this solution if you found this to be helpful. Thanks,

Posted on Jun 01, 2009

  • christoph535 Jun 01, 2009

    megsjewel04 , ok, if the thermostat is installed correctly, here are some more suggestions:

    1.Perform a reverse radiator coolant flush using water pressure from your garden hose.

    a.Drain the coolant from your car

    b.dissconnect both heater hoses a garden hose adapter that will screw onto the garden hose that has cone shape that will allow you to put the pointed side of the adapter into one of the heater hoses.

    d.tuen on the garden hose and flush the heater core. Verify if the flow of water coming out heater core matches the rate of flow going in, this will give you and idea if there is a clog in the heater core.

    e.Since you know the clog is not in the radiator, try removing the upper and lower hoses and do the same, again check to see what kind of debris is coming out (if any) and the flow rate of water coming out of the lower portion of the engine where the lower hose is attached to.


    When the old water pump was replaced, were all the fins on the propeller?

    Are you leaking and coolant from anywhere?



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