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Jeep Liberty Heating Ventilation and A/C

50 messages,  Last post on Nov 19, 2009 at 8:49 AM

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What is this discussion about? Jeep Liberty, Auto Repair, SUV

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#14 of 50 Re: A/C Problems [xtec] by orlgriff Oct 27, 2007 (4:34 am)
Replying to: xtec (Oct 26, 2007 8:16 pm) Thanks...that sounds in line with some other info I've found regarding potentially clogged evaporator drain line. Would you agree? Replies to this message: xtec (Oct 27, 2007 11:18 am) orlgriff (Oct 27, 2007 5:20 pm)
#15 of 50 Re: A/C Problems [orlgriff] by xtec Oct 27, 2007 (11:18 am)
Replying to: orlgriff (Oct 27, 2007 4:34 am) You can check you drain hose, but if that plugged you would get mold smell,and water on the floor.You should see a little puddle under you Jeep when the air is on,thats what comes out out the drain. Replies to this message: orlgriff (Oct 27, 2007 5:20 pm)
#16 of 50 Re: A/C Problems [xtec] by orlgriff Oct 27, 2007 (5:20 pm)
Replying to: xtec (Oct 27, 2007 11:18 am) Okay. Thanks again. I was confusing the air side vs the refrigerent side. I was thinking there was an orifice on the refrigerent side that could plug.
#18 of 50 2002 Liberty heater blows cold at stop by mbum Nov 08, 2007 (4:45 am)
My 2002 Liberty heater blows hot as long as I am moving. As soon as I stop the heater blows cold. If I place the transmission in neutral and rev the engine to about 1500 rpm the air blows hot. It blows cold at about 1000 rpm and lower. Any thoughts? Thank you. Replies to this message: caribou1 (Nov 08, 2007 7:47 am) barsnake (Jan 21, 2008 2:06 pm) orlgriff (Jan 22, 2008 4:26 pm) barsnake (Jan 26, 2008 1:41 pm) 2jeeps (Jan 30, 2008 4:11 pm) xtec (Jan 30, 2008 9:38 pm)
#19 of 50 Re: 2002 Liberty heater blows cold at stop [mbum] by caribou1 Nov 08, 2007 (7:47 am)
Replying to: mbum (Nov 08, 2007 4:45 am) Assuming your water pump is OK, when the thermostat doesn't open or when the radiator is partially clogged, you push all the heat dissipated by the engine through the cabin heater because the cabin heating system is always 'first served'; at idle speed there may not be enough heat for you to feel the transition.   If you've blown your engine head gasket and have a (exhaust) gas pocket trapped in there, you may face the same symptom.   Check your antifreeze level first, and when the engine is cold try to move the cooling liquid by doing a 'massage' on your hoses. On a normal cold system you can feel and hear the liquid move back and forth once you open the filling cap. If by doing this the coolant pours out from the top reservoir, you have excessive restriction to flow through the main radiator. The pump can overcome this restriction, you can't.   Next, start the engine with the top reservoir open and wait for the thermostat to open. You should see coolant flowing into the top reservoir. This is a good way to check for air trapped in the circuit: just let the air out and refill to normal level.   On a normal cooling circuit you can open this little reservoir when it's hot and while the engine runs. It should not out gas much; the cap is made with a ramp to allow progressive release of overpressure and the tiny hose located under the cap collects the overflowing coolant.   Always keep in mind this can be hot liquid and should be disposed of as a chemical waste
#20 of 50 Re: 2002 Liberty heater blows cold at stop [mbum] by barsnake Jan 21, 2008 (2:06 pm)
Replying to: mbum (Nov 08, 2007 4:45 am) Did you get it fixed? What was the problem? Mine only blows heat when I'm hitting the gas. The AC went in a similar fashion in September or October. Appreciate any help. Replies to this message: orlgriff (Jan 22, 2008 4:26 pm) barsnake (Jan 26, 2008 1:41 pm)
#21 of 50 Re: 2002 Liberty heater blows cold at stop [barsnake] by orlgriff Jan 22, 2008 (4:26 pm)
Replying to: barsnake (Jan 21, 2008 2:06 pm) No luck yet. My problem is a/c blows cold then hot. Hot air isn't a problem, but tough to test that for any length of time down here in Florida. a/c problem is intermittent. Acts like low refrigerent but charge is okay. I'm wondering if there isn't some kind of electrical issue getting the compressor clutch to work. Gave up on the Jeep Dealer. I'm asking around for a reliable a/c repair shop which is probably what I should have done to start with. I know this was no help, but wanted to reply. Good luck. Replies to this message: barsnake (Jan 26, 2008 1:41 pm)
#22 of 50 Re: 2002 Liberty heater blows cold at stop [orlgriff] by barsnake Jan 26, 2008 (1:41 pm)
Replying to: orlgriff (Jan 22, 2008 4:26 pm) Thanks for giving it a shot! No one seems to be able to figure ac/heat issues very easily on Jepps. Oh well. Otherwise it's been a workhorse so I can't complain too much.
#23 of 50 Re: 2002 Liberty heater blows cold at stop [mbum] by 2jeeps Jan 30, 2008 (4:11 pm)
Replying to: mbum (Nov 08, 2007 4:45 am) Did you ever figure out the problem. My Jeep Liberty is doing the exact same thing. Heater is hot as long as I am moving. Cold otherwise. Had it to the dealership and they can't figure it out. Any help would be greatly appreciated! Replies to this message: xtec (Jan 30, 2008 9:38 pm)

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