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Old 04-07-2012, 08:29 AM   #1
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I am driving a 2004 Wrangler and I am having trouble figuring out an overheating issue. I was driving home couple days ago and the jeep started overheating; the temp gauge got close to 260 and the check gauges warning light came on. I shut it down for a bit to cool off and started driving off again. The next time it happened, it went from hot back to normal and was right around 210 degrees where it normally is for quite some time. It proceeded to get hot, then back to normal twice more on my way home. I figured it was a thermostat sticking because the heater wasn't blowing hot either. Went to auto zone, picked up thermostat, water pump and new belt figuring might as well take care of this while I was at it. Got everything put on, refilled radiator and thought the problem was solved... not. The radiator on this jeep is less then a year old. It almost seems as if the coolant is not circulating in the system. The overflow bottle remains at the same level. Anyone have any suggestions as to the cause of this?
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Old 04-07-2012, 08:35 AM   #2
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You could have an air pocket trapped in the system. I have ran other vehicles with the cap off at cold, to watch it overflow and BURP all of a sudden and fluid is gone. I would top it off and be fine. You could try this. It has to be hot enough to allow the thermostat to open and cycle.

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Old 04-07-2012, 10:15 AM   #3
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6 or 4 cyl.
Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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Old 04-07-2012, 10:46 AM   #4
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That did the trick... took the cap off, ran it a bit and boom, all is good. Heater is back to it's blast furnace status and it's not overheating. Thanks for your insight and help!
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