W124 high idle - 1994 Mercedes-Benz E-Class

run the fault codes to check for faulty sensors. Have the cat converter checked as it may be cracked and blocking the exhaust at speed.

replace the coolant temperature sensor.

http://www.mercedesmanuals.com/Mercedes_Repair_Manuals_s/555.htm?gclid=CPnwlKeD76YCFYnd4Aod8mMLFg

 

 

Most likely caused by a dirty throttlebody! Remove the intake hose to the throttlebody and clean around the inside and the butterfly valve as well with some brake clean or similar product! Throttlebodies get gummed up by carbon build up effectively closing off the idle airgap under the butterfly valve!

Yes I have a very detailed web sight for you w/ all the Maintenance Manuals info you'll ever need @:http://w124-zone.com/downloads/MB%20CD/W124/Index/103index.html

check condition of spark plugs and wires.. they can cause cut out at take off.
I have problems with Bosch spark plugs. But I love the Bosch ultra premium ignition wires
Also check for vauume leaks, intake hoses tight.etc.

Not sure what dual valve but go to buymbparts.com, autohausaz.com or call a dealer with the vin number and youll get the right one.

hello,good day, (four screw for headlight),remove your signal light for 2 screw,other 2 are in front side (visible)remove wiring and vacuum for adjustment range,ty

Here you find all parts, page is on W124, to select W220 use the bar at the left.
If you want a listed part list buy haynes manual.