Bad blend AIR/ FUEL

[firesun]

No need.

With a 5v supply, What is the Signal Voltage with it in atmosphere ?

then
0.1 bar
0.2 bar
0.3 bar
0.4 bar
0.5 bar
0.6 bar

and so on ?

then what pressure do you give it to get return 4.5 v

Look at MVB's at the same time.

Does that car have MVB's for Pressure and Voltage from that sensor ?

Sellers and constructors here in France is able to tell me what is the voltage of the original AUDI part sensor ( nor air mass flow neither IAT and pressure sensor).
It's no use talking about MBV guide to them!

 

[Dr Sheldon]

It's no use talking about MBV guide to them!

In this case MVB's are a confirmation of correct ECU operation and not a guide. So There is use in talking the way I talk.

Sellers and constructors here in France is able to tell me what is the voltage of the original AUDI part sensor

Yes components do have datasheets.

Often VM GFF and Function Descriptions will furnish us with that information.



You here to fix your car or have a little chit chat and show me how clever or thick you are ? So far not looking good for you !!!

 

[Dr Sheldon]

The sellers are saying that it is a 12 volts sensor!
That's why i am asking you!

Go feed it 12v then !!

 

[firesun]

In this case MVB's are a confirmation of correct ECU operation and not a guide. So There is use in talking the way I talk.


Yes components do have datasheets.

Often VM GFF and Function Descriptions will furnish us with that information.



You here to fix your car or have a little chit chat and show me how clever or thick you are ? So far not looking good for you !!!

Hey Dr Sheldon how are you today?
Thanks to you for your messages!
I am here to chat for fixing my car only while we exploit our knowledge nothing else!
I called AUDI yesterday to ask them the voltage of that sensors we are talking about they said they will search and call back to me but nothing for now
Sellers of sensors said to me that was 12 volts for both but my ECU alimentation of those sensors, in my opinion is 5 volts.
I will wait a bit for AUDI answer and if nothing i will try with original sensors which i think they work with 5 volts and get back to you.

 

[firesun]

I have tested ECU voltage that comes from the plug and i measured 5 volts

 

[Dr Sheldon]

Sellers of sensors said to me that was 12 volts for both but my ECU alimentation of those sensors, in my opinion is 5 volts.
I will wait a bit for AUDI answer and if nothing i will try with original sensors which i think they work with 5 volts and get back to you.

For me there is no longer any pleasure in helping you, there is no other reason for the regulars here to provide that help.

You do not take advice - not good.

You question the advice given - ok acceptable but you still argue with no basis to the argument !

I called AUDI yesterday to ask them the voltage of that sensors we are talking about

You are double checking my good advice which would be ok if you did it with a qualified person - but you are not !!

Fuck !! You are doing it with an Audi Dealer and Parts suppliers !! What the fuck do those people know about the forensic Diagnosis of your Car compared to me ???

I take that as a bare faced insult !!

You either want to take my advice and carry out the tests I ask for or you dont !!

 

[Dr Sheldon]

Sellers of sensors said to me that was 12 volts for both but my ECU alimentation of those sensors, in my opinion is 5 volts.

Who is to say that sensor by design cannot work at 5v, 12v and maybe 24v dependant on application ??

In your car Audi A4 BRB Engine Code: BRB - VIN: WAUZZZ8EX8A068858 the bastard is G31 - Charge air pressure sender and runs at 5v - Now shut up arguing please !

 

[firesun]

Who is to say that sensor by design cannot work at 5v, 12v and maybe 24v dependant on application ??

In your car Audi A4 BRB Engine Code: BRB - VIN: WAUZZZ8EX8A068858 the bastard is G31 - Charge air pressure sender and runs at 5v - Now shut up arguing please !

Who is to say that sensor by design cannot work at 5v, 12v and maybe 24v dependant on application ??

In your car Audi A4 BRB Engine Code: BRB - VIN: WAUZZZ8EX8A068858 the bastard is G31 - Charge air pressure sender and runs at 5v - Now shut up arguing please !

Hello Dr Sheldon!
Thanks to you for your help and your perseverance too!
It's not that i am arguing your advices it is just that my english is a little bit poor while the subject is some kind complicated i would say!
So i am doing my best to understand and follow you!

 

[firesun]

Who is to say that sensor by design cannot work at 5v, 12v and maybe 24v dependant on application ??

In your car Audi A4 BRB Engine Code: BRB - VIN: WAUZZZ8EX8A068858 the bastard is G31 - Charge air pressure sender and runs at 5v - Now shut up arguing please !

Yes you are totally right!
Yesterday i changed G31 bosch sensor with an old original and genuine AUDI part one that i cleaned up before mountage.
Unfortunately the problem remains same but for sure a little less black smokes.
Today i will receive my old original and genuine AUDI mass air flow to change the BOSCH one i have now in the car ( I took measures voltage in the ECU alim plug of air mass flow! was 12 volts)

 

[firesun]

No need.

With a 5v supply, What is the Signal Voltage with it in atmosphere ?

then
0.1 bar
0.2 bar
0.3 bar
0.4 bar
0.5 bar
0.6 bar

and so on ?

then what pressure do you give it to get return 4.5 v

Look at MVB's at the same time.

Does that car have MVB's for Pressure and Voltage from that sensor ?

Where can i find MVB and please would you mind to explain me what is it?

 

[firesun]

Is VCDS able to take those measures for us?
Because i am working alone and not able to be at the same in different places!

 

[firesun]

If we manage to fix my car i can send you something for your help!

 

[firesun]

https://imgur.com/a/1v2Ucm9

 

[firesun]

This is video is when engine is cold

 

[firesun]

https://imgur.com/a/4eu6Us4

And this when it's warm about 70°

 

[Dr Sheldon]

I cannot see those Videos - IMGUR is not available to UK residents

Where can i find MVB and please would you mind to explain me what is it?

I am asking you to apply pressure with mityvac or similar tool and measure signal wire with a Volt meter and make a comparison wit MVB's

Independent Verification if you wish !

 

[firesun]

I cannot see those Videos - IMGUR is not available to UK residents


I am asking you to apply pressure with mityvac or similar tool and measure signal wire with a Volt meter and make a comparison wit MVB's

Independent Verification if you wish !

Thank you Dr Sheldon for your answer i was worrying! lol

Would you mind to give me a link for me to send the videos?

Yes it's ok i have understood now what you are saying to me for testing that pressure sensor!
It's late here now tomorrow i will do that test!

 

[Dr Sheldon]

AUDI mass air flow to change the BOSCH one i have now in the car ( I took measures voltage in the ECU alim plug of air mass flow! was 12 volts)

The measurement side of that Air Mass is still 5v !!

Yes it also has a 12v supply on Pin 2 Black Blue Wire.

 

[firesun]

The measurement side of that Air Mass is still 5v !!

Yes it also has a 12v supply on Pin 2 Black Blue Wire.

I agree with you!

 

[Dr Sheldon]

I also do not want to watch Videos of a broken Car It is a waste of time and no alternative to making measurements.