Well I am now sick to my stomach and not sure what to do. I just spoke with the mercedes shop that has the car and the response was not good. Guy said "Throttle switch needs to be replaced, the plugs are fouled soaked with oil, #6 cylender is not getting any spark, and the cat may or may not be clogged. It's just old and tired."

THAT SUCKS...... I just replaced the plugs 20 miles ago, the car burns about 1 quart per 3000 miles and does not smoke or anything. I am not sure where to go now, maybe to the junk yard lol.

I am thinking about replacing the throttle switch and gutting the cat. See what happens.

Car only has 140,000 on it. Is it really time to retire it? I know I don't want to dump a bunch more money on it.