MAF sensor question!

[HIERLEVELZ]

So I upgraded my Unitronics software to the 630cc file and swapped out the injectors and changed the MAF sensor housing to a VR6 one. The minute is start the car and plug in the maf the car dies. I've been driving the car w/o the harness plugged in. I decided to remove the MAF sensor and take a look at it and this is what i saw;


Do you guys see whats wrong in this picture??

[dirtybrd]

Nothing. I have a good sensor right here and it looks the same.

[HIERLEVELZ]

So the B6's dont have the heating element?

[dirtybrd]

Nope. I'd check for a vacuum leak, charge hose off, or the MAF is bad.

[HIERLEVELZ]

Where did you get a good sensor w/o the housing?

[HIERLEVELZ]

damn i asked the guys at Uni to give me a mafless file but I was told they couldnt because of my model ecu. Not sure what that meant but it would have avoided this bad maf bs.

[F16HTON]

Nothing wrong with the picture, turbo cars do not have a resistor in the MAF element.

[F16HTON]

MAFless tunes suck ass

[HIERLEVELZ]

MAFless tunes suck ass

Well that would explain why the vr6 sensor had the element and mine didnt. I have a feeling the harness has a break in it. I would intermiitently get the ESP light turn on and off while driving. Any of you had any issues with the harness?
I am by no means an electrical person, can you guys walk me thru testing the harness for breaks.

[HIERLEVELZ]

Ok another silly question. What is the orientation of the MAF housing. Does the arrow on the housing point forward or backwards when installed. OK i answered my own question.

[dirtybrd]

Arrow shows the direction of airflow.

[youngspeed]

Try running the stock sensor with vr6 housing

[dirtybrd]

I think he's already running it that way.

[HIERLEVELZ]

I think he's already running it that way.

Yes I am using the stock element in the VR6 housing.

[B5A4Kevin]

how does it run boost-wise with maf unplugged?

[HIERLEVELZ]

Part throttle particularly when cold it runs a little rough but once its warmed up it seems fine. If I connect the MAF then it will die immediately. But I know its not running 100% with the MAF unplugged.

[dirtybrd]

Any updates?

[HIERLEVELZ]

Shit man I went to the store to get some MAF cleaner only to have my MAF housing fall off(removed it earlier and didnt tighten it up properly) the car behind me ran right over the god damn thing. So now im searching for another VR6/TT225 housing.

[dirtybrd]

That sucks.

[HIERLEVELZ]

Yeah man it does im hoping someone here on the board has a 3" maf housing for sale.

[FourRings80]

Yeah man it does im hoping someone here on the board has a 3" maf housing for sale.

PMed

[HIERLEVELZ]

Ok so I got a new maf housing and i sprayed the element with MAF cleaner but im not convinced the maf is faulty. I think i may have a short in my wiring. Any electrical gurus have a DIY for performing this test. I'm a mechanical engineer I hate wiring diagrams and anything electrical.

[dirtybrd]

Any wiring issue would throw a open or short to ground code.

[HIERLEVELZ]

ok then im gonna go scan the car quickly and report back!

[dirtybrd]

Do you have a CEL?

[HIERLEVELZ]

Yes I have a cel from the MAF being disconnected. The car runs fine with it disconnected once its warmed up. The reason why I think there is a short in the harness is because I previoulsy had a Carbonio intake and the maf sensor housing was clocked toward the engine which put a lot of stress on the wires. I would get the esp light turning on intermittently while driving or whenever i moved the intake. The MAF sensor was purchased back in April so I doubt it could have failed so quickly. Then again anything is possible.

[dirtybrd]

Did you get the codes?

[HIERLEVELZ]

No I havent gotten the codes yet I will have them in about 15 mins;)

[HIERLEVELZ]

VAG-COM Version: Release 311.2-N

Control Module Part Number: 8E0 UNI 518 BT
Component and/or Version: 1.8L R4/630 G01 0003
Software Coding: 0016501
Work Shop Code: WSC 00210
1 Fault Found:
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 002 - Lower Limit Exceeded

[dirtybrd]

Sound bad. Is that after you installed it again and cleared the codes?

[HIERLEVELZ]

I'm not sure.....If it werent so cold out I would install it again and clear the codes and then check for a cel. I'll have to do it first thing in the morning.

[dirtybrd]

Cool

[HIERLEVELZ]

So I installed the MAF and checked the g/s with VAGcom and it was right around 4g/s at idle which is within range. Car actually idled pretty good and didnt die like normal. I even took it for a ride and no issues. So I am even more confused. But if it stays like this and doesnt give me any issues then I wont be bothered.

[dirtybrd]

Same MAF with out you changing anything?

[HIERLEVELZ]

Yeah didnt change a thing. Im thouroughly confused.

[B6Lovin]

sounds like loose wires to me. probably got pulled around and possibly a little messed up from being twisted in such a weird way.

and greg - what makes you say MAFless tunes suck? we all seem to be doing pretty well....

[HIERLEVELZ]

sounds like loose wires to me. probably got pulled around and possibly a little messed up from being twisted in such a weird way.

and greg - what makes you say MAFless tunes suck? we all seem to be doing pretty well....

Yeah I think its loose or broker wiring. Havent figured out how to test it just yet. Dont quite know the pinouts. I mean I know the pinouts to test the MAF but i dont know how to identif the pinouts on the ecu harness.