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Old 04-30-2010, 09:50 PM
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Join Date: Apr 2010
Location: Baton Rouge, LA
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die444die is on a distinguished road
Coolant reservior rattling

Hey guys, I recently got my first Jeep (a 2003 Wrangler) and today I was out just driving and when I got home and turned it off I heard and felt a vibration from under the hood.

When I opened the hood, I noticed the coolant reservoir was vibrating and coolant was bubbling in it. The coolant level had risen much higher than the fill line, about 2 inches from the top of the reservoir.

I've noticed the cap on the reservoir does not stay on very well and tends to lift up.

The engine temp was slightly over 210 degrees.

Any ideas what the cause of this is and is this anything to worry about?
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Old 06-11-2010, 02:21 PM   #2
Join Date: Jun 2010
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Jeepmanrmy is on a distinguished road
Coolant reservior rattling

I also have a 2003 Sahara and just started noticing intermittently after I stop the Jeep the anti-freeze in the reservior is at a higher level and vibrating. Seems to happen when I have the air-conditioning on as well. I saw other posts where it could be a radiator cap or the thermostat...

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Old 06-11-2010, 02:36 PM   #3
Join Date: Mar 2009
Location: Bixby, Oklahoma
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T-BONE N BIXBY is on a distinguished road
Are you sure you don't have too much coolant in there?

You may get several different answers on here. Therefore, I'm not going to suggest anything other than start with the cheapest fix first.
At some point during jeep ownership, you will BUST A NUT!!!
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