Good video straight to the point... Just wondering in what sequence you tightened the screws to keep from moving! Everytime, i have at 0.70v then tighten upper rt. Screw the signal moves to 5.2! So, i tried, to tighten bottom left after hours of trying to calibrate signal, only to end up at 5.5 After, aligning it to 0.71v I turned engine off and removed fuel pressure regulator, and tried rt. bottom screw, then upper left. Lower left and upper right, snd some how the signal still dropped from my 0.701v Somehow when screwing in screws the signal ends up lower! Would you please comment on how you did yours?? Las time i changed, i got it on the second try... This time i tried, for 4 hours!! Thank you, would appreciate your comment!
@@190mex thank you, for your reply! I have a 92, 300e 2.6l Would, my model also have small adjusting screw to adjust voltage. Is it located on pot. Near the 3 pins? With plug plugged in and mm + to pin 2 and - to pin 1 I noticed you had cables hooked up which would give you free hand to adjust pot. Up or down-calibrate... Thank you, again as I tried for 4 hours yesterday! Really, appreciate your help!!
0:43 - Mine has a bolt from that central pillar going through the air filter. It looks like it's not supposed to be there, as I don't see the same bolt on any other picture online, or even in the Haynes manual. I see that my bolt is screwed right into the adjustment pillar. Could this be a cause of my exsessive fuel consumption?
I don't know about the screw, the Mercedes put a plug on the top, otherwise there is a 3mm Allen key inside to adjust the mixture. For higher consumption, the lambda sensor may be defective, the mixture may be set incorrectly (too rich)
@@r3FMusic Check first ruber, plastic hoses and tubes and connections for leak if you have a leak on this system you have a broblem, try old trick with cigarete smoke close on kejetronic air intake with latex glove disconect plastic pipe from inlet manifold vacuum conection ant put smoke in good luck.
Awesome vid, I’m trying to adjust mine, but it doesn’t get anywhere near 0.7, but flutters between 0.15 and 0.2. I’ve just bought the newer black version potentiometer and this also does the same. I want to check the wires in the clip are correct, is it 1- brown 2- green/blue 3- blue/black?
@@Courier103 im thinking mine is the same. But not really sure since my problem with mine is that when i step on the gas pedal “fast” it sputters all the way to 1500rpm at idle. Also notice when i was driving it at high rpm when i floor the pedal it does it too. Its giving me headache
@@alexismontealegre1845 does it stumble and cut out and hold at a certain rpm? Mine did this but only when the engine was cold, I changed my fuel pump check valve (maintains fuel loop pressure) and it fixed it, I did this at the same time as fitting the new jetronic controller so I’m not sure which exactly fixed it, although the car should ‘run’ smoothly without the controller fitted at all, just less efficiently. Are you able to source another ecu? I picked mine up for £20
Molim te za malu konsultaciju. Upravo sam izmerio otpor na potenciometru - (5,6kilooma). Upalio sam motor, izmerio volte - 0. To ispada da ne valja potenciometar, jel tako? Da li je pouzdan onaj tvoj sto si ga kupio sa ibeja(ebay)? POzdrav i hvala ti puno na svemu do sada!
Postupak za testiranje i.imgur.com/Bc9lYfU.png u radu na leru kad je na radnoj temperaturi trebao bi biti 0.7 V tolerancija je 0.1 V. Sto se tice potenciometra sa ebaya pokazao se dobar za sada: www.ebay.com/itm/3437224035-Air-Flow-Meter-Throttle-Position-Sensor-FOR-Mercedes-Benz-1981-1993/191884045105?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
Treba testirati dali sistem drži pritisak ovo sto ste naveli moguce da je akumulator goriva koj se nalazi pored filtera goriva on u sebi ima membranu i ona sa godinama pukne i tu nastaje problem toplog paljenja ili ovo sto ste naveli
The sensor plate potentiometer is installed in airflow sensors in the KE-Jetronic. It measures the deflection of the sensor plate and forwards this information to the control module. In conjunction with other sensors such as the throttle valve sensor and lambda oxygen sensor, the control module can identify various engine operating states and correspondingly adapt the amount of injecting fuel. Together with an idle actuator, the idling can also be stabilized to make engine idling smoother.
Thank you , I have a 190e 2.6l. She is randomly stalling. I have had two mechanics look at it and clean different bits on it. Is there stuff I can do?. She also is slower than she should be and hesitates when going up a hill. Originally the problem was that she wouldn't start if the engine was cold. The first mechanic only clean bits on the car and didn't resolve the issue. She has 250k and the second mechanic said it is because she is old. I am the third owner and the last owner had her for 14 years. I think he took care of of her. I do not know where to start with the car.
For good performance of the engine should have good pressure for the KE jetronic system, good spark plugs (distributor, cap, cables). Good air flow potentiometer, good temperature sensor, should not have vacuum leaks, and this is disadvantageous if they are not regularly serviced. For engine cold start check a temperature sensor, fuel regulator, fuel accumulator.
hello, I'm having a problem with the blend, running in 2000 revolutions, and pulling more gasoline, emitting black smoke, is it the fuel and air regulator?
Hi 190mex, my car suffers from idling problems and, after cleaning the idle speed valve, I have realised that the air flow potentiometer is not working fine, since the idle is istill inestable when the engine is working at service temperature. Before trying to repair the sensor, I have some doubts: Does this method of fixing the potentiometer actually works? I mean, is it reliable in the long term? Another question is, since there is no way to find graphit 33 where I live, is there another product that can fix the part in the same way? Thank you very much, your videos are helping me a lot!!
Hello this method works but not long-term. For the long run, it is best to take the original potentiometer or a good aftermarket. In other words, using a ceramic carbon-based ceramic method for best performance, any Electrically conductive coating in sprey can be used. I'm glad to hear that my videos help.
Like you, it is very difficult to find Graphit 33 here in the USA. I have just now ordered ANTI-SEIZE TECHNOLOGY Graphite Spray from Amazon and waiting for it to be delivered to try. The original Bosch sensor is very expensive! And my China sourced one is not working properly it seems...
hi ,is more the 1 year i try to solve my trouble with my 300 ce in my case when i give full throttle at low rpm car start shattering for a couple seconds and than go perfectly idle shaking at little do you thing this potentiometr can be culprit? i have alredy check: airflow metering head rebuilt new injecttor colant temp. sensor checked ok ignition sistem is new cap rotor spark plug end ignition wires thank you giuseppe
It is possible check this and this: Throttle Switch tests ruclips.net/video/s9WjaO61QyI/видео.html and this values ww2.justanswer.com/uploads/eurotec/2009-10-24_202744_air_flow_pot_test.png It is very important that the fuel pump is working properly not humming I had a problem with the fuel pump that buzzes when it abruptly gas engine initially shuddered because the pressure drop must be constant for the system to work properly it should also look and rubber injector seals!
That Graphit 33 Graphite paint is very cool ! Wil repair my Mercedes tps while the Chinese copy runs the car until ebay seller sends me a tin ! Had a low tick over so new OVP relay and TPS replaced !
Hi! Please, when my 190E 2.0 1992 is warm the idle jumps from 600 to 900 and from 900 to 600 and so ón Please can you tell me how to fix this? Thank you in advance Best regards Daniel
@@190mex Hello mate , I did check output , 0.14 when tickover ( Engine off ) Then went up very smoothly up to 5.0v , when I pressed the main flap down in intake ... tickover went up to 900 straight away , was 500 and cutting out at traffic lights ! Not now ....Think it is good condition as it is so smooth on the voltage
Good video' please make some more as " really enjoy learning about my 190e.
Soon I will do the video adjustment air flow potentiometer, idling for ke-jetronic
Thank you i alredy checked this at this point i guess the problem can ne or fuel distributor or injector clogged thank you again for your help👋
Good video straight to the point...
Just wondering in what sequence you tightened the screws to keep from moving!
Everytime, i have at 0.70v then tighten upper rt. Screw the signal moves to 5.2!
So, i tried, to tighten bottom left after hours of trying to calibrate signal, only to end up at 5.5
After, aligning it to 0.71v
I turned engine off and removed fuel pressure regulator, and tried rt. bottom screw, then upper left.
Lower left and upper right, snd some how the signal still dropped from my 0.701v
Somehow when screwing in screws the signal ends up lower!
Would you please comment on how you did yours??
Las time i changed, i got it on the second try...
This time i tried, for 4 hours!!
Thank you, would appreciate your comment!
When you got close to 0.7 +- 0.1 V then tight on filing not to hard and you have very litle small srew near pins and you can adjust to 0.7 +-
@@190mex thank you, for your reply!
I have a 92, 300e 2.6l
Would, my model also have small adjusting screw to adjust voltage.
Is it located on pot. Near the 3 pins? With plug plugged in and mm + to pin 2 and - to pin 1
I noticed you had cables hooked up which would give you free hand to adjust pot. Up or down-calibrate...
Thank you, again as I tried for 4 hours yesterday!
Really, appreciate your help!!
0:43 - Mine has a bolt from that central pillar going through the air filter.
It looks like it's not supposed to be there, as I don't see the same bolt on any other picture online, or even in the Haynes manual.
I see that my bolt is screwed right into the adjustment pillar.
Could this be a cause of my exsessive fuel consumption?
I don't know about the screw, the Mercedes put a plug on the top, otherwise there is a 3mm Allen key inside to adjust the mixture. For higher consumption, the lambda sensor may be defective, the mixture may be set incorrectly (too rich)
Thanks. 2:03 What kind of paint should I use?
With graphit
@@190mex Thank you very much for the answer.
@@190mex
I hope to fix the high idle problem this way ..
@@r3FMusic Check first ruber, plastic hoses and tubes and connections for leak if you have a leak on this system you have a broblem, try old trick with cigarete smoke close on kejetronic air intake with latex glove disconect plastic pipe from inlet manifold vacuum conection ant put smoke in good luck.
ruclips.net/video/SsLcXEbj_vA/видео.html
the voltage of the lmm pot should be 0.7 volts as in the video
Awesome vid, I’m trying to adjust mine, but it doesn’t get anywhere near 0.7, but flutters between 0.15 and 0.2. I’ve just bought the newer black version potentiometer and this also does the same. I want to check the wires in the clip are correct, is it 1- brown 2- green/blue 3- blue/black?
Have you fixed it?
@@alexismontealegre1845 no, I’ve bought a new jetronic ‘ecu’ to see if that works
@@alexismontealegre1845 new ecu worked. So old one must have been faulty
@@Courier103 im thinking mine is the same. But not really sure since my problem with mine is that when i step on the gas pedal “fast” it sputters all the way to 1500rpm at idle. Also notice when i was driving it at high rpm when i floor the pedal it does it too. Its giving me headache
@@alexismontealegre1845 does it stumble and cut out and hold at a certain rpm? Mine did this but only when the engine was cold, I changed my fuel pump check valve (maintains fuel loop pressure) and it fixed it, I did this at the same time as fitting the new jetronic controller so I’m not sure which exactly fixed it, although the car should ‘run’ smoothly without the controller fitted at all, just less efficiently. Are you able to source another ecu? I picked mine up for £20
Molim te za malu konsultaciju. Upravo sam izmerio otpor na potenciometru - (5,6kilooma). Upalio sam motor, izmerio volte - 0.
To ispada da ne valja potenciometar, jel tako?
Da li je pouzdan onaj tvoj sto si ga kupio sa ibeja(ebay)? POzdrav i hvala ti puno na svemu do sada!
Postupak za testiranje i.imgur.com/Bc9lYfU.png u radu na leru kad je na radnoj temperaturi trebao bi biti 0.7 V tolerancija je 0.1 V. Sto se tice potenciometra sa ebaya pokazao se dobar za sada: www.ebay.com/itm/3437224035-Air-Flow-Meter-Throttle-Position-Sensor-FOR-Mercedes-Benz-1981-1993/191884045105?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
Pozdrav. Trebam pomoc. Mercedes 190 benzin 2.0 Ajnspic, auto kad malo stane nece da upali nikako?
Treba testirati dali sistem drži pritisak ovo sto ste naveli moguce da je akumulator goriva koj se nalazi pored filtera goriva on u sebi ima membranu i ona sa godinama pukne i tu nastaje problem toplog paljenja ili ovo sto ste naveli
Que bueno que saliera en español los videos de la Mercedes benz
Hy! I have a w202 from 1987 with 2.0i engine. I have the same sensor underneath the distributor. How does the engine react when this sensor is broken?
The sensor plate potentiometer is installed in airflow sensors in the KE-Jetronic. It measures the deflection of the sensor plate and forwards this information to the control module.
In conjunction with other sensors such as the throttle valve sensor and lambda oxygen sensor, the control module can identify various engine operating states and correspondingly adapt the amount of injecting fuel.
Together with an idle actuator, the idling can also be stabilized to make engine idling smoother.
Thank you , I have a 190e 2.6l. She is randomly stalling. I have had two mechanics look at it and clean different bits on it. Is there stuff I can do?. She also is slower than she should be and hesitates when going up a hill. Originally the problem was that she wouldn't start if the engine was cold. The first mechanic only clean bits on the car and didn't resolve the issue. She has 250k and the second mechanic said it is because she is old. I am the third owner and the last owner had her for 14 years. I think he took care of of her. I do not know where to start with the car.
For good performance
of the engine should have good pressure for the KE jetronic system,
good spark plugs (distributor, cap, cables). Good air flow
potentiometer, good temperature sensor, should not have vacuum leaks,
and this is disadvantageous if they are not regularly serviced. For engine cold start check a temperature sensor, fuel regulator, fuel accumulator.
Thank you so much. She has a lot of miles, so I am going to do the good spark plugs (distributor, cap, cables) I will let you know how she is doing.
Check for plugged up muffler or catalytic converter also.
Beautiful! How is she doing 7 years on?
I sold this car i have another 190e for daily car
@@190mex sweet. I have a '91 300e 4matic I'm about to do this to.
hello, I'm having a problem with the blend, running in 2000 revolutions, and pulling more gasoline, emitting black smoke, is it the fuel and air regulator?
If is petrol test air flow potentiometer, test fuel pressure, test fuel injectors
Hi 190mex, my car suffers from idling problems and, after cleaning the idle speed valve, I have realised that the air flow potentiometer is not working fine, since the idle is istill inestable when the engine is working at service temperature. Before trying to repair the sensor, I have some doubts: Does this method of fixing the potentiometer actually works? I mean, is it reliable in the long term? Another question is, since there is no way to find graphit 33 where I live, is there another product that can fix the part in the same way? Thank you very much, your videos are helping me a lot!!
Hello this method works but not long-term. For the long run, it is best to take the original potentiometer or a good aftermarket. In other words, using a ceramic carbon-based ceramic method for best performance, any Electrically conductive coating in sprey can be used. I'm glad to hear that my videos help.
Thank you very much, I will replace it then! It is very kind of you
Like you, it is very difficult to find Graphit 33 here in the USA. I have just now ordered ANTI-SEIZE TECHNOLOGY Graphite Spray from Amazon and waiting for it to be delivered to try. The original Bosch sensor is very expensive! And my China sourced one is not working properly it seems...
@@jessechen2701 Try this one, it's relatively cheap!
www.ebay.com/itm/Drosselklappensensor-MB-Mercedes-Benz-03437224015-03437010039-03437224035/133173658800
hi ,is more the 1 year i try to solve my trouble with my 300 ce in my case when i give full throttle at low rpm car start shattering for a couple seconds and than go perfectly idle shaking at little do you thing this potentiometr can be culprit? i have alredy check:
airflow metering head rebuilt
new injecttor
colant temp. sensor checked ok
ignition sistem is new cap rotor spark plug end ignition wires
thank you giuseppe
It is possible check this and this: Throttle Switch tests ruclips.net/video/s9WjaO61QyI/видео.html and this values ww2.justanswer.com/uploads/eurotec/2009-10-24_202744_air_flow_pot_test.png It is very important that the fuel pump is working properly not humming I had a problem with the fuel pump that buzzes when it abruptly gas engine initially shuddered because the pressure drop must be constant for the system to work properly it should also look and rubber injector seals!
check fuel pressure and potentiometer voltage value
If you have Catalytic converter in exhaust system, check that it is not clogged up. That happened to my 2.3 190e.
Hola, te consulto por.un problema que tengo en in auro parecido
That Graphit 33 Graphite paint is very cool ! Wil repair my Mercedes tps while the Chinese copy runs the car until ebay seller sends me a tin ! Had a low tick over so new OVP relay and TPS replaced !
Hi!
Please, when my 190E 2.0 1992 is warm the idle jumps from 600 to 900 and from 900 to 600 and so ón
Please can you tell me how to fix this?
Thank you in advance
Best regards
Daniel
Check for vacuum leaks, air flow potentiometer resistance
how can we diagnose if the air flow sensor/potentiometer is bad?
Idle is not stabile you can test with multimetar ww2.justanswer.com/uploads/eurotec/2009-10-24_202744_air_flow_pot_test.png
Thx. I have a w123, same engine. ;-)
Is it the same procedure 2.3E w201, 4 cylinder.
Yes
Same procedure for pretty much any ke-jet engine, even the big v8 ones
Just watched this video then went and moved my throttle sensor and hey presto stable tick over !
A permanent solution is to replace the potentiometer if it is worn out.
@@190mex Hello mate , I did check output , 0.14 when tickover ( Engine off ) Then went up very smoothly up to 5.0v , when I pressed the main flap down in intake ... tickover went up to 900 straight away , was 500 and cutting out at traffic lights ! Not now ....Think it is good condition as it is so smooth on the voltage
Good video 👍
why replace it?
Becouse ebay potentiometer not working properly very difficult to adjust!
was car difficult to start? maintain idle? suddenly engine stall? thx for your great video :D
maintain idle when the cold varies
1.8 ???
Yes engine is 1.8
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Baaad music man..