[bayerischer]

hello,
so on the pic, you have that plug on the top of the throttle valve that I thought is EGR plug as I was going to test to disconnect it electronically, so I disconnected the whole plug and drove some and didn't feel any difference.

but

after i drove later, i noticed the hugely increased fuel consumption from 8.5l it went to 15l / 100km for information.

and today

I have finally installed DIS V57 and run a valve throttle test and when I activated the test the car just shut down, I did unplug it and plug it in and investigated and tested it 2x and every time the car shut down.

did I just damaged the throttle valve by driving briefly with it unplugged like that??? below is a pic of the plug and valve throttle

below is a pic i found onlilne, but it's the same thing. don't be confused by white arrow as it was something else, I am talking about electrical plug on top.

also, there is no fault code


UPDATE: I forgot to mention I also disassemble MAF sensor and is there a chance I killed it??? today, I bought air cleaner cleaned it, but it still didn't improve it consumes double the standard, which is about 15l/100km and before 8.5

[Torqu3]

Plug the valve back in and leave it plugged in. That car should correct itself. The car kept shutting down because I am assuming the test you ran closes that throttle valve which starves the engine of air and it dies.

[bayerischer]

well, no the test is supposed to open and close the valve in 2 seconds intervals. I have done it a year ago and it did open and close, but now it just shutted down the car.

plus i have doubled the fuel consumption. I think I probably even did unplug it while running engine....and there is a loads of eletronics that went bad probably

I dont remember as I done it few days ago, when I was reading here about disconnecting EGR electronically. but where is that EGR plug then when this is the one to the throttle valve? I haven't seen any other plug into the EGR.

[335stoner]

its on the bottom side of that assembly..

out of curiosity.. is that screw still unscrewed maybe it now is getting a giant air leak

[BB_cuda]

Originally Posted by bayerischer

well, no the test is supposed to open and close the valve in 2 seconds intervals. I have done it a year ago and it did open and close, but now it just shutted down the car.

plus i have doubled the fuel consumption. I think I probably even did unplug it while running engine....and there is a loads of eletronics that went bad probably

I dont remember as I done it few days ago, when I was reading here about disconnecting EGR electronically. but where is that EGR plug then when this is the one to the throttle valve? I haven't seen any other plug into the EGR.

You have a European market car. To my knowledge, only North American market cars have an electrical connection to the EGR. This may have caused you confusion so that you unplugged the throttle body (really called anti shudder valve=ASV). European market cars only have a vacuum connection to the EGR, unless things have changed.
P.S. what does the arrow in the photo have to do with the situation? It is pointing at charge pipe coming into the inlet of the ASV. The ASV connector is at middle right of that picture.

Stoner, the loose screw would cause a boost leak but shouldn't shut down the car.

[335stoner]

oh wait... never mind..

[JuiceQuadre]

Originally Posted by 335stoner

its on the bottom side of that assembly..

out of curiosity.. is that screw still unscrewed maybe it now is getting a giant air leak

its not his picture, he found the pic online for reference he said

[BB_cuda]

Originally Posted by JuiceQuadre

its not his picture, he found the pic online for reference he said

okay, thanks

[Hoooper]

Isnt shutting down exactly what you would expect to happen when the throttle valve closes? That is half the point of even having it on this engine in the first place.

[JuiceQuadre]

Originally Posted by Hoooper

Isnt shutting down exactly what you would expect to happen when the throttle valve closes? That is half the point of even having it on this engine in the first place.

i thought the same but he said he did the same test before with different result?

[JuiceQuadre]

Originally Posted by BB_cuda

You have a European market car. To my knowledge, only North American market cars have an electrical connection to the EGR. This may have caused you confusion so that you unplugged the throttle body (really called anti shudder valve=ASV). European market cars only have a vacuum connection to the EGR, unless things have changed.
P.S. what does the arrow in the photo have to do with the situation? It is pointing at charge pipe coming into the inlet of the ASV. The ASV connector is at middle right of that picture.

Stoner, the loose screw would cause a boost leak but shouldn't shut down the car.

i know the EU cars egr is controlled by vacuum, but i think there is still something you can unplug to disconnect the egr and test it that way.. Its done on our cars here in eu.. not exactly sure how tho

edit: I think there is a pressure converter that can be unplugged

[Torqu3]

The engine isn't a delicate flower like you seem to be thinking. Plug back in and drive for awhile. The fuel consumption should sort itself out. Instantaneous fuel consumption doesn't mean anything. Get it a few hundred kilometers to correct itself.

[bayerischer]

ok i forgot to mention that i also manipulated with MAF sensor, and today i bought an air sensor cleaner and clean it up, but no help..... could i damage air mass sensor? I am not skilled mechanic and it was difficult to take it out and I moved the thing quite harshly too....
now my fuel consumption is DOUBLED!! every time I barely stomp the gas pedal, it is showing maximum consumption......did I just killed my MAF!!???? omg

[335stoner]

how did you clean the MAF??? that is a delicate part if you are not careful.... did you drop it?

[Torqu3]

Originally Posted by bayerischer

ok i forgot to mention that i also manipulated with MAF sensor, and today i bought an air sensor cleaner and clean it up, but no help..... could i damage air mass sensor? I am not skilled mechanic and it was difficult to take it out and I moved the thing quite harshly too....
now my fuel consumption is DOUBLED!! every time I barely stomp the gas pedal, it is showing maximum consumption......did I just killed my MAF!!???? omg

So right now, what symptoms do you have that something is wrong? If it is only the decreased fuel economy then I'd say give your car sometime to readjust the mileage. If you go through a tank of diesel and you're getting half as many kilometers per tank as you used to, then you should be investigating.

[bayerischer]

Originally Posted by Torqu3

So right now, what symptoms do you have that something is wrong? If it is only the decreased fuel economy then I'd say give your car sometime to readjust the mileage. If you go through a tank of diesel and you're getting half as many kilometers per tank as you used to, then you should be investigating.

well, man I reset the fuel consumption and it was very apparent the moment I drove after I first disassembled MAF and the other thing few days ago, since then double the fuel consumption and it 's not like small difference, it's like night and day, it's like 10miles per gallow right now

[bayerischer]

Originally Posted by 335stoner

how did you clean the MAF??? that is a delicate part if you are not careful.... did you drop it?

omg yes, I think I droped that too. I saw that video here on youtube by fixmyvw and the guy also handled the MAF not delicate in that video....so I thought it;s good

[Hoooper]

What do you mean you manipulated the MAF? There are no moving parts in the MAF so not sure what that could mean. If you just touch the MAF film, especially if its hot, you can toast the film and the sensor would need to be replaced.

[bayerischer]

well i manipulated with the housing of it, not the actual thing, but i couldn't get it off so i pull it rather harshly....and the inner thing moved even though it was screwed....

so i am looking for a new MAF and i read that people have problems with after market MAFs???? they recommmend OEM BMW??? I can see Bosch for some reasonable price...

[Hoooper]

Bosch is oem I believe

[bayerischer]

well i hope it would be the same quality it's about 150 bucks.
anyone has experience in changing MAF? any adaptation procedure? I have INPA and DIS v57 ....
this car is a nightmare tbh

[BB_cuda]

Member here used Bosch with no problem