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thermostat, heater core, head gasket?

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Old 12-20-2008 | 07:26 PM
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dancinthunder's Avatar
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Question thermostat, heater core, head gasket?

My 99 Cherokee has been losing coolant and now the blower is blowing tepid, not hot like it used to. I also, sometimes, smell burned coolant after I park and walk past the front end. I live in Maine so the heat is an issue, and I haven't had any problems with overheating (no gauge, just a warning light.) Any ideas? Thanks to all responders.
Old 12-20-2008 | 07:46 PM
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From: Oak Harbor, WA.
Year: 1987
Model: Cherokee
Engine: 4.0 liter RENIX I-6, DIY Cold Air Intake, 2.5 FM Exhaust, 3 Core Radiator
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I bet you have coolant seeping out of somewhere. You can be losing coolant slowly from a leaking T-stat housing, Water pump gasket or seal, radiator hose, heater hose or cracked or blown radiatore tank. This would give you the burned coolant smell you are smelling after shutting it off. It can also cause you to slowly lose your coolant without overheating issues...well...right away, anyway. Once enough of the coolant is gone you will have overheating.

Right after driving your XJ long enough to get it to normal operating temperature, stop, shut it off and lift the hood and smell for your burnt coolant smell and look for rising steam or trickling water or wetness that would indicate the area of your leak.
Old 12-20-2008 | 07:58 PM
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I had a radiator leak at the pass. side top edge that had the same symptoms. Like the man said, pressurize the system and look real good for leaks. 4.0s are also good at water pump leaks. It'll usually run down the lower hose if the pump leaks.
Old 12-20-2008 | 08:31 PM
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will do, thank you both.
Old 05-25-2009 | 10:02 AM
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Right afterwards active your XJ continued abundant to get it to accustomed operating temperature, stop, shut it off and lift the awning and that appears to that appears to smell for your burnt coolant that appears to that appears to smell and attending for ascent beef or trickling baptize or clamminess that would announce the breadth of your leak.

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Thermostat
Old 05-25-2009 | 01:49 PM
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Originally Posted by fuji0030
Right afterwards active your XJ continued abundant to get it to accustomed operating temperature, stop, shut it off and lift the awning and that appears to that appears to smell for your burnt coolant that appears to that appears to smell and attending for ascent beef or trickling baptize or clamminess that would announce the breadth of your leak.

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Thermostat
Old 05-25-2009 | 01:52 PM
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The language barrier strikes again. At least they tried to help.
Old 05-25-2009 | 01:56 PM
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Originally Posted by fuji0030
Right afterwards active your XJ continued abundant to get it to accustomed operating temperature, stop, shut it off and lift the awning and that appears to that appears to smell for your burnt coolant that appears to that appears to smell and attending for ascent beef or trickling baptize or clamminess that would announce the breadth of your leak.

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Thermostat
WOW
Old 05-25-2009 | 08:14 PM
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From: Stafford,VA
Year: 1998
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Another 0331 head strikes again.........
Old 05-25-2009 | 08:23 PM
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Originally Posted by fuji0030
Right afterwards active your XJ continued abundant to get it to accustomed operating temperature, stop, shut it off and lift the awning and that appears to that appears to smell for your burnt coolant that appears to that appears to smell and attending for ascent beef or trickling baptize or clamminess that would announce the breadth of your leak.

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Thermostat

I want none of what your smokin'



Scooter
Old 05-26-2009 | 12:09 AM
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Originally Posted by 1deadeye
I want none of what your smokin'



Scooter
They are using some weird translation program from Chinese or Japanese or something to Engrish.
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