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2004 jeep liberty overheats with a/c on after driving it in town. ...showed coolant temp switch bad code...replaced it, water pump, thermostat and radiator cap and checked hi and low relays for fan and have 13 volts on both at fan plug....fan is working while driving and overheating. ...no coolant in oil and no white smoke out of tailpipe to eliminate the head gasket...both the upper and lower radiator hoses are hot making flow. ......?????

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: '97 subaru overheating

head gasket most likely.

Posted on Aug 31, 2008

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SOURCE: 95 honda civic lx overheating

COULD BE COOLANT SENSOR,HEAD GASKET,CHECK THE TIMING,THE PROPER MIXTURE OF COOLANT,WATER PUMP.DID YOU HAVE IT CHECKED OUT?ANY LEAKS?HEAT WORK WITH FAN?

Posted on Jan 08, 2009

tbirdfan1
  • 3051 Answers

SOURCE: 1996 dodge ram. Vehicle runs hot. I have replaced

Hello there"
sounds like you have done a lot with this there is a few things that you can do to ensue every thing is running right.
first if you can get a handheld thermal gun and check the temperature at the temp sensor on the radiator or block then see what it reads compared to the guage to ensure the guage is correct.
next check the temperature at both the top and the bottom of the radiatoer if there is a big difference in temps the radiator is partially blocked a radiator will increase 30 to 100 degrees if the radiator is 20 percent blocked.. also check to ensure that the radiator hoses are not collapsing.
Now ensure that you are not gettin air in the system by way of the water pump gasket or by loose hoses ok?
and finaly check to ensure that the heater core is not leaking and drawing air into the system or is clogged this will make a vehical give the overheating symptom also ok?
Let me know how this is going
Best regards mikle
An

Posted on Jul 07, 2010

SOURCE: Why does it keep overheating 2003 Pontiac Grand AM V6

Head Gasket still--- not done correctly

Posted on Jun 16, 2012

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Remove front grill


both are covered in the fsm.
https://www.techauthority.com/en-US/Pages/Home.aspx'

the latter is by engine sizes, not stated.
water sending, ? the ECT? eng. coolant temp.?
no symptoms posted, but im to assume the scan tool shows
low ECT readings and the dash cluster engine temp are both low?>
if both are low, then the engine thermostat is bad. 99 out of 100.
next time post symptoms we can be on same page.
i guess you know where the ECT is? and wanted to know out to
remove it?
sigh
2.4 liter , face engine at 5pm on right cam, is ECT
or 1pm on top idle pulley. has a wire there.
3.7L
see photo below.

#3 unscrew it, after draining coolant.

25252690-cx5p5jsxher3ki1yzdn3ijnx-2-0.jpg

Oct 22, 2014 | 2004 Jeep Liberty

2 Answers

My 2005 jeep liberty over heats, any solutions


check to see if you have a viscous fan hub and if so then replace it . Check when the overheating occurs If it is at stop lights but cools down when travelling. It is the hub. If it overheats when going slow and under load it will be the hub. If it overheats when travelling fast then check the radiator for core blockage and have a compression test done to check for head gasket / cracks Run fault codes and check for blocked exhaust system --cat converter)

Jul 02, 2014 | 2005 Jeep Liberty

1 Answer

Car started knocking really bad got a cylinder 2 misfire code after opening coolant bleed valve with enging hot


Okay, it may be due to overheating, that may be the noise you heard, lets hope. first allow engine to cool, open radiator cap or the resivoir cap, which ever is the fill, remove the bleeder at top hose and fill radiator slowly until coolant comes out bleeder.

note if water pump was replaced due to leaking and engine was overheated at that time then it may be a good idea to replace the thermostat .
after filling is done start engine and allow it to run. watch temperature if temp start to climb past half way shut engine down and let sit for 5min. then restart and check level, in res do not open cap . feel air from fan and see if it is getting hot, this may take up to a half hour but do not drive,

A few questions, does this jeep have an electric fan?
when you heard the knocking was engine temp hot?
If you start jeep cold does engine knock?
Did this jeep get a new thermostat with waterpump job?
did it overheat when pump went bad and why did water pump get replaced?

sorry for all the questions ,just trying to get all the info to help you .

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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.

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1 Answer

1993 Subaru LX Liberty with a EJ22 2.2L Engine Overheat problem?


I have the same model, and had the same problem 2 years ago- random overheats. Problem turned out to be the thermostat installed upside down. The thermostat should be fitted so the operating part with the spring goes up into the engine block. A similar problem I have now is overheats and coolant loss out the expansion tank overflow, specially during wide open throttle driving. Also bubbles in the radiator. Seriously suspect head gasket failure.

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1 Answer

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Check you water pump to see it it is leaking. Check your coolant level.

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1 Answer

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Greg

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do you have a "check engine" light on? A bad temp sensor would give a wrong reading. Do you get heat from your heater core? Also make sure you are getting a good flow from catalytic converter and muffler so you know they aren't plugged heating up engine temp. Also make sure all your heat shields are in tact. Are you using 50/50 mix or mostly water? Though in cold temps you normally want to use more antifreeze less water, I would try more water, less antifrezze.

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1 Answer

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Hi micro0711, the fan (which I assume is electric) works off of 3 corresponding pieces of equipment: the rad,the thermostat and the coolant temp sensor so if you have a 180 deg thermostat the coolant would circulate through the engine and generate heat once the coolant temp reaches approx 180 deg the thermostat opens the coolant temp sensor signals the fan to engage removing the heat from the radiator cooling surface maintaining a safe operating temp. If you find your temp is rising check to be certain there is power to the fan and also that the thermostsat is operating,hope this helps good luck

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