hi i have a mercedes c180k coupe 1.8 petrol manual 2004 the idle speed stays at 1200rpm for long periods of time on idle and the gradually creeps back to normal. i innitially tried unplugging the air mass sensor and this cured the problem but did bring the eml light on, i replaced the airmass sensor with a brand new mercedes vdo siemens one and this has made no difference the fault is still there. i again unplugged the sensor and this again cured the problem HELP HELP HELP any ideas as to what the problem could be there are no fault codes apart frm the air mass sensor where i unplugged it
