1st Apr 2011, 08:22

I have the same problem. Have you found out what the noise was all about! I love the car, and that reason will keep me from ever selling it! So please help me with the problem.

29th Jul 2011, 22:12

We own a 85 500 SEL. Found out that the idle control has a fuse that went bad, it's in a larger fuse panel under the hood of your car. My car was idled so high that the car would move on its own at 20mph. I hope this helps, I'm a lady restoring my baby. Good luck.