zusatzluftschieber Djetronic MB

I just joined you. Greetings from Turkey.
A very useful website. I am really grateful to the people who prepared this site, thank you very much. my car is mercedes w114 280E. 1976 year.Since the number of this D jetronic is very low in Turkey, it is very difficult to find a master who knows and repairs it.That's why I'm exploring the system myself.The additional air valve is known to close automatically when the engine temperature reaches 70 C degrees Celsius.When I check when the engine is hot, I see that it still vacuums the engine in the hose. It does not shut down and constantly vacuums the air towards the engine. What kind of errors does this cause in the general operation of the system? As a result, more air enters than the engine needs. my second question,
How can I adjust the throttle switch setting?157 / 5000Çeviri sonuçlarıIs there a visual way of explaining this for novices in a way that I can understand exactly? I think it's probably not set correctly.
thanks for all
kf 

Merhaba Unknown,

it would be nice if you could sign with your first name so that we can address you directly.

An AAV is like a foot on gas pedal when it is open.  It can lead to higher revs in idle and ultimately to sawing of the engine if it has an ECU with over-run switch-off.

Adjusting throttle switch is easy and can be done via 3 methods. But first loosen 2 screws on throttle switch housing so that it can be turned.

1. Use multimeter in Ohm mode to measure 12/14 to 17 on its connector. Find the point of transition between no resistance and 0 Ohm. Look at radial marks on top of TPS and turn half a mark further to 0 Ohm position. This will ensure that idle-run contact will work in all temperature conditions.
2. You could also use a feeler gauge 0.3 mm to ensure the same
3. You can use over-run shutoff. Open AAV hose so that car idles at >2000/min. It will start sawing as soon as idle-run contact is closed.

Wishing you success.

thanks for answer ...my name is kerim .
1) If the AAV is always on, will there be a problem with the spark plugs because the engine does not work properly and too much air enters? Does the vehicle consume more fuel than normal?
2) Please expose my questions as I have no knowledge of throttle switch (TS) setting. sorry .. i have no clue. Which way should I turn it a quarter degree? Is there a photo or video that visually illustrates this?
thanks for all...  I'm sending the backup  ts picture I have.
Mr. Kerim

Merhaba Kerim,

spark plug problemleri yok. You will then have too high revs in idle on warm engine or too low revs in cold engine. Again, an AAV is just like putting a foot on gas pedal.

Now have a look at this example photo I have taken for you. It hsows throttle switch with 2 screws on top and bottom. And you see long and short marks on housing along screw slots. Every long tick means 1° turn. You should find where 17 and 12/47 have contact. Then you turn it a small tick further. That ensures that idle contact closes in idle no matte what temperature car has.

 

Thank you very much for your reply. You have explained it very well so far. you said you need to find out where 17 and 12/47 made contact. Can I see how to do this? Does it have a visual form? Because if I tell an electrician or mechanic, I'm sure he can't. Because it is very difficult to find a master who understands these cars in Turkey. So I need a little more detail on how 12/47 and 17 will contact or what you mean by that. Thank you for all your help.
best regards
kerim

Merhaba Kerim,

fotgrafina bak, O throttle switch'da gösteriyor numeralar 12, 17 ...

Merhaba Kerim,

and by the way: I accept compensation via icli köfte and künefe . Of course from Çınaraltı Künefe. Last Saturday I prepared icli köfte with my friends. But there was no Künefe

Nasil ödeceksin ? Icli köfte ve künefe istiyorum! Çınaraltıdan Künefe tabiiki. Ve kaymak unutma lütfen! Çınaraltı patronu beni hatirlacak. Her zaman kaymak isteyen Alman. Gecen cumartesi icli köfte yaptik. Ama Künefe yoktu Dostum Antakyali.

 

reallly ?? it is amazing ))
I accept künefe ... who is your friend from antakya?
I want to know him ?
please send her private information. I would like to meet him.
thaks

Hi Kerim,

he lives in Germany. So you cannot meet him before next summer. I visited him several times in summer in Antakya and I saw all the W124 on the steets in Hatay. I love Antakya food and culture.

good morning ,
I understod you. he(friend) lives germany now.I wanted to meet him on the phone.because hatay is lıttle city.So ,everyone knows each other. We definitely have common friends.my möbil phone :
In diesem Beitrag ist für Gäste nicht alles sichtbar. Um alles zu sehen, muss man registriert und angemeldet sein.

I am giving this information for you as well. If you send me a message on whatsupp, we will communicate there. whatever you want, okay. Easy künefe )

Günaydin,

I am afraid that I do not use WhatsApp. For me that is a Facebook espionage software. And for you to be on the safe side, I will delete your personal phone data and not let it be publc on the internet. I have of course also informed my friend. Will see him tomorrow. But Antakya is not small.

thanks correct... ok Please may you forward my number him tomorrow?
When you are available, can you send me the ts (throttle key switch) setting as a photo or video? For example, will there be a setting when the ts socket is plugged in and the black outer cover is attached?
thanks...

Hi Kerim,

I fear I cannot help if you do not know how to measure that contact 12/47 and 17 is closed on throttle switch by loosening those 2 screws and turning it. I have no video showing that. If your mechanic also does not know, it is time to change him.

Thank you for your answer. We met your Turkish friend. Our mutual friends are out. I am grateful for sending him my number. Besides, you are very right, but unfortunately they do not know these engines (d jet) in Hatay. Should I remove the black cap on the ts during measurement?
thanks, best regards
kerim

Hi Kerim,

no you just remove electrical connector and use a multimeter in resistance measurement. Now loosen upper and lower screw and turn housing until you see 0 Ohm. Turn 1 tick mark further in 0 Ohm direction and fix screws. No magic and no need to open housing.

I forgot to ask what is the reason for focussing on throttle switch only. You have seen my checklist ?

good morning
thanks, I will read it( check list) to morrow.
I have another problem.
I last used the car on Sunday, from Sunday until today, the car was always in a closed place for 3-4 days. I tried to start the car 8 -10 times but it doesn't work at all.During the check I made at the mechanic last week, we noticed that the thermal timer ( termozeitschalter)was not working, the relay that came to her may be broken or she is broken.Could the thermal timer be the reason why it doesn't work? Does the thermal timer have a brain-related function?
These are the questions that come to my mind.
Since the thermal timer and the brain cannot communicate, is it possible that the brain does not send more fuel to the 6 injectors when it should be sending more fuel at the first start?
best regards
kerim

Hi Kerim,

thermotime switch is hardly active in your region and if only once. It is activated while cranking engine. It is electrically heated and when it reaches 35°C it will not operate any more. Its effect is only for a quicker first start on cold engine. YOur engine must start without - just a little slower.

Have you measured fuel pressure?

hallo dear dr volker
yes I measured fuel last week.(2bar)

Do you hear fuel ump for 2 seconds when you switch on ignition? Do you have spark on spark plugs, does car have +12V on pin 16 and 24 of ECU? What is fuel pressure now?

guten abend ,
I'm back with new questions..
I started my vehicle, which I could not run in the morning, after 5-6 more trials in the evening. Since the battery weakened during the ignition in the evening, I charged the battery with the cable from the other vehicle.After working for 10 minutes and warming up, when I turn the engine off and on, it works quickly without any problems. Or when I use the vehicle all day, I don't have any problems when I turn off the engine and start it again during the day. But if I park the car in the garage and don't use it for 3-5 days and I don't start it at all during this time, when I want to start the car, I encounter the problem of not starting this morning. Even when I try to start it many times, the battery gets weak. I can't succeed. Last Sunday, I used the vehicle without any problems. I tried to run it again this morning, but it didn't work. What could be the problem?
second question ,
What should be the ideal CO value in these vehicles? (w114 280E)
It is measured with an exhaust emission measuring device.
thanks ,best regards.