Merc 200E 1991

[Antsue]

You can try it ,,but mark so you can put it back again after test /

I will give it a go tomorrow it's a bit difficult to get to its at the back of the engine mounted on the inlet manifold and I've got big hands I just thought someone on the site might have had a reason to adjust it and have some info as with air filter off tick over would be different. Michael

 

[DREAMER NO2]

Whats on the other side of this plug ? its like the fresh air duct sensor or this one

 

[Antsue]

Whats on the other side of this plug ? its like the fresh air duct sensor or this one View attachment 89314

Mine looks like this

 

[star]

Some idle controls have two pins dependant on year. One of the 3 pin plugs goes to the fuel metering flap, one goes to the throttle Venturi switch and if there’s one more ( year dep) it’ll be for idle valve.

 

[Antsue]

Some idle controls have two pins dependant on year. One of the 3 pin plugs goes to the fuel metering flap, one goes to the throttle Venturi switch and if there’s one more ( year dep) it’ll be for idle valve.

Mine is like this

 

[DREAMER NO2]

Did you give it a good clean out inside ? also check for broken or leaking hoses that go to it .Idid say information on the 2l is hard to find .Iwoul;d look at the 230e wiring manual it could help you .Mercedes in some cases .. fit one wiring loom and not one for each model .