Mohameed Abd

Hello i have MB w211 220 cdi 2008 i have idle problem go to 850 or 900 after i turn on heat or ac from 750 to 900 and the other problem when i start the car after like 10 min now in cold weather the engine fan go on all the time with low speed and never go off when my engine temp is only 40 degree
any one here can help with that and thank you all BTY i change the engine coolant sensor

MJ50

moved to W211 forum...