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?