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Old 12-28-2008, 04:36 PM   #1
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Heater issues

Hey guys sorry I've been MIA the last month or so incase anyone missed my two cents, which i kinda doubt. The issue is that my heater doesn't get that hot and it takes forever to get luke warm. I know on my 97, the heater was blazing hot. The 01 not so much. I think it is the switch cause there is no water on the floor or any othe issues on the Jeep. It doesn't get up to 210 in the winter time in fact it usually sits in between 100 and 210. Anyone else have this issue?

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Old 12-28-2008, 04:41 PM   #2
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I'd first suspect a thermostat problem. Is the current thermostat a 195 degree model as is required by the computer? If it is, perhaps it is stuck in the open position. Or perhaps the heater core needs to be backflushed, there could be some gunk in there that is blocking coolant flow.

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Old 12-28-2008, 05:29 PM   #3
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i would pop the thermostat out and test it.. if it still works its your heater core
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Old 12-28-2008, 06:32 PM   #4
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Thanks gents, will do. Jerry 'll get back to you about what temp thermo.
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Old 12-28-2008, 06:59 PM   #5
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Jerry how do I go about backflushing the heater core, do I a regular coolant flush or do I need to do something else as well. I have to do a oil change tomorrow so I'll check the thermostat then, but I'd like to know what else I might be getting myself into.
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Old 12-29-2008, 03:02 PM   #6
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There are two black rubber hoses that run on the passenger-side of the engine block above the spark plugs between the firewall and front of the engine that are the heater in/out hoses. Disconnect them both at the front of the engine and flush them alternately back and forth with your garden hose. The object is to get the heater core flushed of any gunk that may be inside so the water flows easily and equally in both directions.
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Old 12-30-2008, 12:09 AM   #7
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Wow opened up the thermostat housing and there wasn't one. Got a 195 from autozone along with a gasket that you dont have to put sealent on, put in back together and it leaks now. I pulled it appart again and got a new gasket put sealent on it and now it doesnt leak as bad but still does. is the autzone thermo not sealing right? Do I need to get a mopar part? Thanks for the flushing info as well.
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Old 12-30-2008, 12:33 AM   #8
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Old 12-31-2008, 05:19 PM   #9
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Got it all worked out heater works fine now that there is a thermostat thanks for the help guys

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