Question about 2002 Jeep Liberty

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Jeep Liberty Boils Over Into Resevior

My jeep liberty boils over. At idle it will not overheat or boil, but when revved up it will boil after about 30 seconds. The boil over will not be as quick or severe when the heater is on, but it does eventually boil even with the heater on. I have replaced the thermostat, water pump, have it full of coolant, have attempted to remove all of the air, but how does one know that all the air is out? I have not checked the pressure with a compressor for cracks/leaks. So perhaps that is the next move. I am concerned that the radiator does not flow as well as it should and that may be a factor. I flushed it and it is not clogged, but maybe does not flow as well as it should. I think the main thing to consider is that at idle it all works fine. The jeep can idle for an hour and not over heat/boil. When revved up it will boil into the plastic tank through the overflow line coming off the top of the radiator. No water in oil, no smoke, just seems to boil very quickly. Thanks for reading, any help is appreciated. If you have any questions I will answer them asap. Would love to get this maddness over quickly.

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Posted on Jan 02, 2017

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SOURCE: 1999 jeep gran cherokee is pushing water into

do you have a hose that is collasping on you, please check them.

Posted on Feb 17, 2011

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SOURCE: My 3.7 liter 6 V Jeep Liberty (2003) runs hot very

Chek in this order:

1- The water level in the auxiliary deposit.
2- the ventilator, some one have in the center a viscosity licuit that become hard when the temperature increase, if not, the air flow slowly and the water increase the temperature.
3- the valve, this is locate in the return tube from the radiator to the motor, this one regulate the pass of water to maintain the temperature stable.

I hope this help you.

Posted on Nov 03, 2011

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I keep geting a low coolant indicator when it first starts in the morningalso it keeps overflowing and boiling our of the overflow tank. This happens even when ythe coolant level is below full.

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I'd maybe remove the thermostat and either just replace it or not have a thermostat installed just to see if it still boils over. If it boils over with no thermostat installed then you're getting into possible leak in cooling system...i.e. water pump weep hole, hose or radiator leak...or a blown head gasket.

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