84 500SEL high idle......sigh....
 

Been trying to root out all possibilities and this is what i have covered so far.
I checked for vacuum leaks all over. I sprayed carb fluid around the engine with the air cleaner off and got nothing. I checked the idle control valve and swapped it with known working ones to no avail. I confirmed that the idle control box was working. OVP is fine as well. What should i check next? It idles at 1000 and drops down to 900 or so in gear. I will soon be getting a manual for it so i can learn the ways of the mighty benz gas engine :D

ABS lamp ON ??

ABS light is not on. I am noticing some cracks in the air/smog? pump hose below the alternator. could this cause a vacuum leak? The car runs very rough until its warm.

rough idle
 

Had similar problem; Try using an Injector cleaner, as it could be bad Fuel