Question about 2002 Jeep Liberty

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No heat in jeep 2002 Liberty what shall I do?

Posted by oneemanuella on

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Anonymous

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First while the engine is cool remove radiator cap and make sure it is full of coolant. Run the engine till temperature reaches mid way on gauge.Feel radiator and heater hoses, should be very warm to touch,if hoses are cool, thermostat might be stuck open. If hoses are hot, sit in passenger seat and turn heater controls to high heat, turn control to make air come out dash vents , from left to right feel temperature of air from vents .A temperature change can mean a problem with the air inlet door, mode door or blend door . This seems to be a common problem. Further inspection will be needed to verify which actuator and door is the problem. There is a Technical Service Bulletin with infomation and a list of parts you can get from your dealer. This is not an easy job, most if not all of the heater housing will have to be remove. Hope this helps. If this is your problem and you dicide to do the repair I can give some help with information on removing dash components.This can be a 4 to 9 hour job depending on with part is bad.

Posted on Dec 04, 2010

  • kenwestley42
    kenwestley42 Jan 21, 2013

    Thanks for the info i,ve been researching this issue for days and this is the most difinitive answer i have gotten,thanks again.

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kenwestley42

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In my case it was the blend door actuator,which i had to remove the whole complete dashboard to access it.it was a all day job but i got it done.thanks everyone for all the input i now have toasty heat again.

Posted on Feb 21, 2013

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5 Related Answers

Anonymous

  • 94 Answers

SOURCE: heater prblems

make sure the coolant in radiator is full to level and if thats o.k. you need to replace the thermostat since the engine does not reach operating themp.

Posted on Jan 22, 2009

Richard Scordino

  • 6982 Answers

SOURCE: 2002 jeep liberty has very

sounds like a head gasket problem. A minor leak there will pump compression into coolant and force it out of heater core. Any unusual steaming from tail pipe? Also: if radiator was flushed "in car" sometimes debris does not come out. Try flushing with it out of the vehicle. Jeep radiators are notoriously small for their application if not at at least 90% they will not work correctly.I'd look at the hg first though otherwise, your symptoms seem to be contradictory.

Posted on Jan 27, 2009

Eric Marcum

  • 9 Answers

SOURCE: 2002 jeep liberty interior fuse diagram

1-20amp-pwr outlet frt. 2-10amp-rear fog lights(export only)
3-15 amp-horn 4-10amp-hedlt low beam rt
5-10amp-hedlt low beam lft 6-20amp-bodycontrolmodule/pwr dr locks 7-spare 8-spare 9-10amp- rt pk lt /rt tail lt/trailer tow lt/cluster
10-spare 11-15 amp-flasher 12-15 amp-stop lts
13-10amp-bodycontrolmodule/cmtc/cluster 14-spare
15-10amp-pdc fuel pmp & auto shutdownrelays/skis
16-20amp-pwr outlet rear 17-15amp-rear wiper 18-20amp-radio choke relay 19-20amp-frt fog lts/trailer tow stop and turn lts
20-20amp-sunroof 21-spare 22-10amp-wiperswitch/frt and rear washer 23-10amp-lft park lt/lft tail lt 24-10amp-pdc blower motor relay 25-10amp-heatseatswitch/hvac controlhead/trailor tow battery charge 26-10amp-hedlt highbeam rt 27-10amp-hedlt highbeam lft
28-spare 29-15amp-heated seat module 30-10amp-heated mirrors/rearwindowdefrosterindicator 31-20amp-cigarlighter
32-10amp-radio/frtdoorlockswitches/bodycontrolmodule
33-10amp-skis/diagnostic connector 34-15amp-cluster/courtesy lts/radio/bodycontrolmodule/maplights/cmtc/underhood lt/vanity lts
35-spare 36-10amp-ignition run/start-orc/lft and rt siacm
37-10amp-ignition run only-orc 38-10amp-abs module/brake shift interlock solenoid 39-10amp-rear window defroster relay/flasher/backup lts

Posted on Jul 10, 2009

Anonymous

  • 164 Answers

SOURCE: Liberty Jeep 2002 at what milage do I change the timing belt?

First does it have a belt ore a chain and most newer one recomend at like 60k ore 90. If got a chain it stretch and you will not get great gas milage but it will not break like a belt

Posted on Jul 26, 2009

BrianFahey

  • 1 Answer

SOURCE: Install a 05 Jeep Liberty 3.7 in a 02 Liberty

BEFORE you put the engine in you must convert it with your old engine's crankshaft position ring and it's pick-up sensor. This ring can ONLY be changed with the engine upside down and out of the car. All rods must be disconnected, all mains are part of a cast saddle that must be removed, the front engine covers and all the timing chains must be removed, and finally the crankshaft must be lifted out and the ring must be hammer-unscrewed (impact screw driver, but I forget now if the taper-headed screws are allen, hex, star or phillips). DO NOT WASTE YOUR TIME REMOVING THE HEADS. The ring is ENTIRELY different than the one the computer system on the 02 Liberty can recognize (this is what triggers your spark timing). Next is the magnetic pick up 'wheel' located on the front of the passenger's side of the over-head camshaft. This magnetic cup wheel triggers the '02 fuel injection system (don't un-magnetize it). Lastly, the '02 plastic intake manifold (w/ O rings for seals) for the '02 has an additional port, this is an easy swap-out. Mostly there are no gaskets- the finish is so fine they just use a factory sealer (comes in a tube). Buy it, it's cheap enough and it matches the factory's specs. Taking the engine back out/in is NOT fun, but with the engine on a stand, and with no time constraints it's managable (but still not fun). I made that exact engine swap myself and went through a lot of anguish learning all of this. By-the-by, these engines will NOT tolerate dirty oil. DO NOT EVER try and stretch out your oil changes, because they run really hot (due to the windage tray that prevents oil mist from coating the engine's internals) an ash will form and goop up the insides. The fine oil pick-up screen (drilled plate) will always clog up. If it's been a long time since the last change and your engine is still running fine, when you get around to putting in new high detergent oil it sorta un-sludges the goop and REALLY coats the pick-up. DEATH BY SUFFICATION. If you're ever at this point (no damage yet) I would suggest doing the oil change (before there's any knocking or signs the engine is failing) and I would do 2 more oil & filter changes @500 miles each; hopfully you'll dislodge the ash/sludge and get it out of the engine. Once damage has started it progresses very quickly- this engine is not very tolerant. Your oil will be gold color, and yet your enging will sieze because it can't 'get to it'. BEST OF LUCK- this is very do-able, but you might first investigate if you can swap out the engine management computor and wire harness and maybe avoid all of this above mentioned wrenching. No back ground info here, plus I didn't have access to the vehicle the 05 engine was snatched out of- sorry, and good luck again. One last bit of advice- I bought a zero miles engine from a National Highway Admin. crash/test vehicle. When I broke the engine down ALL the timing marks on all three chains were not aligned and had to ALL be set- I guess they might do that to prevent the parts from re-entering the 'system'? Or, some dumb s__t at the factory was new and/or pi__ed-off and this engine was just plopped in the donated/untitled crash vehicle rather than ripping it back apart and re-assembling it. The damn Jeep fired on the second crank and is running fine now (2 years later). Ciao4Now, Brian Fahey

Posted on Feb 22, 2010

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