Hi Tim,
Sorry to hear that you're having issues with a car that you just purchased. I've attached a link to our tech articles on the E-series that will have info on just about every section/fix. Please use this as a guide if needed in the future if you're thinking of going the DIY route.
Hope this helps and best of luck!
Mercedes Benz E-Series Tech Articles -
Mercedes-Benz E-Class W124 (1987-1995) Technical Articles - 300TE 24, 300CE 24, 300E 24, 300CE, 280E, 300E2.8, E280, 320TE, E320 - Pelican Parts
-Dmitry