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Yay more problems with my jeep

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Old 12-03-2008, 10:40 AM
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Default Yay more problems with my jeep

Im pretty sure my theromostat went up last night.


it was getting over 260 degress and was boiling over the bottle... and the antifreeze was full. The heater was blowing cool air ...


Would this be the thermostat?
Old 12-03-2008, 10:59 AM
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thermostat failure isnt typical...And i think not 100% sure but i think the heater core hose comes off the waterpump check yours to be sure...so i would be looking at the Pump and the tension/condition of the belt....If it does turn out to be bad replace the Thermostat also...make sure to test it before you install it.

Also double check you oil make sure you dont have any signs of coolant in it.

Last edited by 98 JeepJeep; 12-03-2008 at 11:14 AM.
Old 12-03-2008, 11:01 AM
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It will blow cold air if the thermostat is stuck closed because it cant circulate...
Old 12-03-2008, 11:13 AM
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another vote for the thermo
Old 12-03-2008, 11:33 AM
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now after i sat for a while to let it cool down it was still at like 240. then it shot down and the heater started blowing hot air
Old 12-03-2008, 11:47 AM
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change out the thermo, its sticking, highly doubt you'll get that lucky again
Old 12-03-2008, 05:23 PM
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Originally Posted by matejcekautoworks
change out the thermo, its sticking, highly doubt you'll get that lucky again

Either change it or take the broke one out and leave it you will be fine either way......
Old 12-03-2008, 05:33 PM
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Check you lower hose mine was doing that when I got it and the hose was collapsing
Old 12-03-2008, 05:42 PM
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replace the thermostat.. check your impeller in the water pump... if that is broken or dammaged it wont matter how nice the thermo is...

look for white residue around the base/bolts of the water pump to see if its leaking antifreeze if you are losing some.
Old 12-03-2008, 07:09 PM
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Originally Posted by Teal96XJ
Either change it or take the broke one out and leave it you will be fine either way......
its not a good idea to run without a themostat.
Old 12-03-2008, 07:30 PM
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yep just throw a new thermostat in it. 180 deg.
Old 12-03-2008, 09:17 PM
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make sure you check the cap on the serge tank after you change the therm. and fill it back up. If it was blowing out coolant it might have stripped or cracked it
Old 12-04-2008, 11:02 AM
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I also needed to change out my serpentine belt. i cant figure out how to get anything off of it..
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