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Message: <blockquote data-quote="robertgrap838" data-source="post: 1013757" data-attributes="member: 264551">I have a 1999 saturn sl1, and lately, whenever I drive it around and have to stop somewhere for a long period of time with my foot on the brake (such as in a fast food drive-thru line or at a red light), it starts to vibrate a lot, and if my window is open, makes a lot of noise.  It almost sounds like two aluminum cans banging on each other.  Furthermore, my car has been heating up hotter than it used to.  It used to go to the 1/4 point, but lately, it can go all the way up to the 1/2 way point.  It doesn't need its oil changed for another 500 miles, though according to the date, it should have been changed a month ago (it usually takes me more than 3 months to go 3000 miles, though).  Is something wrong that needs immediate attention, or should I just take it to my mechanic when not inconvenient?</blockquote>