when the car is just started it idles just below 3, then once it is warmed up it idles between 1 and 2, closer to 2.
when the temperature is at hundered it idles at 1, when the temperature is at 90 it idles at 1.5 and when the temp is just above 80 it idles close to 2.
its a 1991 500SL.
it does sound like it is coming further back.....
why would valves be more noise when the engine is warm though? when the engine is cold and first started it is very quiet?/