I have an '87 5KS Quattro...a while back, I noticed it was all of a sudden VERY loud while driving--sounded like I had glass packs. The car ran and started just fine--mpg was consistent, etc. Then after about a week, I started having a very hard time starting it, almost as if it were mis-firing or was starved for fuel. It turns over just fine, it's just very hesitant to fire. Once it finally does turn over, the exhaust (I think) is very noisy for a while, producing a rattling sort of sound...but after warming up for a few minutes, the car runs fine, EXCEPT for the fact that it idles too fast (somewhere around 1400 RPMs) and, consequently, heats up a more quickly than it should (though the heating up has not been problematic as I just winterized). I can't help but think the starting/idling problems are somehow related to the exhaust noise. Any ideas/suggestions would be gratefully accepted. Thanks...
jason