I know nothing about fixing anything but if easy enough will give it a go . LOL
thought it could be coolant but coolant is full
whats next to check ?
bring in or check myself ?
limited income as i just bought the darn thing ( private party )
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Re: 2002 jeep liberty heater blows warm not hot
Well, if the electric radiator fan isn't staying on, it pretty much has to be in the heater box. You may have a heater control valve on one of the hoses that go into the heater, but generally default on those is full heat. that leaves ether a blend door problem, an obstruction blocking air flow through the heater core (leaves, mouse nest or other) a blend door with partial movement, or a semi-plugged heater core (internal, inhibiting coolant flow). Since this is usually a long and involved job, you may want to find someone local that can help you." Hands-on" I can deal with almost anything but alas! I am too far away!! One more thing...If you have automatic climate control, see if there is a small (about the size of a quarter) vent somewhere on the lower dash anywhere. there is a sensor in there that may be dirty.(in the hose behind it) Well it's getting late, its all darkified outside! Got to walk my doggie and go to sleep. I'ts 2AM!!! Good luck with it, wish I could help more!!!
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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.
first off all if a/c gas presssure is low or no gas at all ( because of some reason you have already lost it) it acts exactly how you you describe. kicks in and out. but cant cool air inside. (first make dealer check it for leaks and let them fill it with proper yellow flourescent dye added gas)
limited het in cabin heater is another issue. if engine is warm and still not enough heat inside, we can say that you have a clogged cabin heater or air pocket is in hoses connected to cabin heater. you need to bleed cooler radiator inm front. you need to raise infront of car and bleed it with bleeding screw. after this check the heat again if still not enouh heat you may need to replace cabin heater.
if engine is not warm enough when you drive slow or let it idle. this means you have a broken thermostate or it is stuck half open.
Jeeps are notorious for having broken temperature control (Blend Air) doors. A malfunctioning Blend Air Door actuator probably caused it to break. The dash will have to be removed to replacethe door and the door actuator.
I have a 2002 Jeep Liberty and after driving for about 30 minutes the air conditioner would start to blow hot air. The air conditioner clutch was sticking. I could hit the clutch and it would kick in and start to work. I went to Advance Auto and purchased a big spray can of electric motor cleaner and a big spray can of WD-40. I soaked the clutch with the electric motor cleaner, used the whole can, then soaked it with half a can of WD-40. The clutch has worked perfecty ever since.