Question about 2002 Jeep Liberty

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Thermostat out of no where my 2002 jeep liberty had overheated when i got home from a 30 mile round trip.i noticed my tank was low but did not see any leeks.i checked my heat and the heater was blowing cold.it appears to be the thermostat.where the heck is it.the upper hose goes to a housing but i cant see where the thermostat would go..its a six cyl

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  • jgilligan Sep 24, 2008

    I have the same problem. Question. If the heater blows cool air does that mean the thermostat is bad?

  • jasondavid_4 Dec 06, 2008

    I've had the same problem...overheated one day, and blows cold air only from the vents.

    If you follow the LOWER hose from the radiator to the engine, there is a housing that contains the thermostat. It is held on by (2) 5/16" bolts top and bottom that are difficult to get to without an extension and a socket wrench. It is hard to see and get to from the top and impossible from the bottom.

    I replaced the part...and the overheating & cold air blowing problems persist...any other ideas on what else might be wrong?

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  • 359 Answers

It's in the housing you described..

Posted on Sep 02, 2008


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2 Answers

I have a 2005 jeep liberty that's over heats any solutions?


full flush it yet. (AF change out is very limited)
rad tubes clogged, use pyro gun to find this easy.
bad pump. all AF goes acid if IGNORED.
fan belt slips.
Rad fans dead.
thermostat upside down
thermostat bleed hole not up hill , trapping air in block making gauge fail too.
is the block really full of AF or are you reading the liar tank, onside.
check rad levels in the RAD cap neck for full or not. dead cold.

is it is really overheating or only the fibbing gauge , tells you that,?
no steam?
no bursting of AF out side tank
no pinging,?
no loss of power.?
lots and lots of signs , not one stated.......do so please.
A/C trips off line? (it too has over heat detection)

Jul 02, 2014 | 2005 Jeep Liberty

1 Answer

2002 jeep liberty heat only works at high rpm


Sounds like low flow issue. Flush and clean system, PROPERLY! Buy a flush kit, drain system, blow compressed air through, fill with cleaner/water mix, run for 30 min with heat on, drain system, blow out with compressed air, fill with water, run for 30 min, drain, blow out with compressed air, fill with 60% coolant mix.

Nov 26, 2013 | 2002 Jeep Liberty

1 Answer

2005 Jeep Liberty 3.7L overheating


it's overheating, for sure,
is coolant levels dropping? cold checked at rad cap?
"pulled over and found a hose to cool the radiator and hose near the thermostat,"
i can not understand this statement"above"
if it overheat only parked, check fan for full ops.
if overheats moving too, wont stay cool moving fast
then:
bad rad cap
bad thermostat , they have 7 year life says STANT. (and why)
belts slipping (to water pump)
rad cores blocked (IR thermo gun it) ask
water pump impellers rust 1/2 gone?

all this assumes no coolant loss, if you have loss, tell where.,
where it leans
ground
passengers toes (foot well)
engine oil pan? milky oil
if A/T TRANS, check it for milky too.

Mar 17, 2017 | 2005 Jeep Liberty

1 Answer

2002 jeep liberty 3.7 - same prob as barbara_ I_bo did on Apr 11. Overheated, changed thermostat, noticed belt was worn, changed it, flushed radiator, now idles rough, misfires, will drive but prob...


I've herd that on high mileage vehicles that the veins of the water pump can actually erode away. Maybe cheap metal or old coolant or wrong coolant.

Jun 15, 2011 | Jeep Liberty Cars & Trucks

1 Answer

I have a 2002 jeep liberty with 145,000 miles. I change my oil a month ago and check the oil today and notice i was a half qt. low. I notice oil building up around the intake manifold (left side). I have...


THis could be bad gasket or just bad seals. I would recommend to have the engine washed on your local garage or if you can do it on your own the better. Once cleaned you should be able to identify the source of the oil. Usually bad gaskets would also cause you to burn oil and cause smoke.

Apr 04, 2011 | 2002 Jeep Liberty

1 Answer

Ran a 300 mile trip up to Pennsylvania mountains this weekend. 2001 Jeep Grand Cherokee ran fine. I did notice though that while driving with ac on I got a blast of hot air. Temp gauge was at 200 to 210 no...


Doesn't sound as though you have overheating issues.
With a 196 thermostat, a vehicle is designed to run at 200 to 210,and you were putting it under a load on your trip.
I don't know why you would think about changing anything,unless you were doing some trouble shooting, and a test you were performing, indicated a failed component.
I would change the thermostat, as preventative maintainance every five years, and watch for the fans to be working after a trip of five miles or so.
Your A/C may have been switched off, by the various computer systems, to prevent overheating, or it may be starting to have it's own issues.

Sep 20, 2010 | 2001 Jeep Grand Cherokee

1 Answer

Jeep Liberty 2005 3.7 engine running hot, need to install thermostat? fan working, full of water , water tank cap fits good.


A new thermostat would be the easiest and cheapest to do first.There is also the water pump but that normally would cause a complete overheat,probably after about 20-30 miles,water boiling out the overflow.Good luck! Greg

Sep 05, 2010 | 2005 Jeep Liberty

1 Answer

2003 3.7L Liberty Jeep overheated - no leaks in


thermostats are fairly reliable considering how cheap and simple they are.
They can and do sometimes fail (nothing is perfect). the cause is pretty much that they just stop working, usually because the internal movable part jams.
I believe a company called robertshaw makes what they claim is a "lifetime" thermostat...I doubt if it actually will last that long but may be a slightly better unit to use as a replacement.
I would use the opportunity to check the fan(s) to make sure they are working properly, that the radiator is not externally or internally obstructed and to replace your coolant.
if the overheat condition persists, check (or have checked) to make sure that there are no hydrocarbons in the radiator (indicates a cylinder head gasket leak) If your gasket has failed, it needs immediate service or it will cause serious secondary damage to the engine.

Apr 30, 2010 | 2002 Jeep Liberty

2 Answers

Gas Mileage on a 2008 Jeep Liberty


could be either a bad thermostat or a plugged fuel filter try them first

Jan 20, 2009 | 2005 Jeep Liberty

2 Answers

2001 Jeep Liberty air conditioner


Check the cooling fan relay. Have a guy(or girl) at an auto part store (AutoZone, etc..) hook up a diagnostic code reader to the hookup uner the steering column dash. I replaced mine, but it was timely and alittle tricky. If you have some tech ability, you can do it, but if not, it will probably be about $350.
If you let the jeep run with the a/c on, look at the cooling fan and see if it cycles on after a few minutes. If it doesnt, it could be the relay, if it does come on, then it could be a condensor prob.

Jul 20, 2008 | 2002 Jeep Liberty

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