In need of help bad! 2002 A6 3.0l, no power running lean

[builditup]

First things first, Some of you may know i have posted this up before and i thought i had fixed my issue but with my luck it was not the case. So here is my second atempt at trying to get some more help. (please don't get mad at me for making a new thread i thought the other one would just confuse people) Thanks AZ,

Ok so the history, I got the car from an old man with the CEL on. He said his shop said it was the cats. Got a deal on the car so i drove it home. FIRST thing i notice is the car has a few mis fiers at idle, Second thing i notice is when i leave a dead stop the car JUMPS and looses power, The third is the LOSE in power i mean it has no power at all. Some of the things i have checked and or replaced. Replaced pcv, fuel filter. I have checked,cleaned and adjusted the gap on the plugs .044". When i checked them i can see that they were running super lean!!(i'm figuring this is the lose of power. no fuel no go) I have checked the fuel pump and it seams fine not sure what its pumping (psi) but it is running and if i pull the fuse it kills the motor after a sec. I've checked for vacuum leaks and only found one on the vcg, replaced that and fixed nothing. I do not have a scanner but every time i do something i pull the neg side of the battery to clear the code and then run the car. All the shops around me want 75+$ to scan it and thats just for them to say "well it could be this this this or this...... 1 million dollars" If it comes down to that i will take it to them but i wanted to give this one more shot. I'm great with working on cars i have a garage full of tools but just need some one that knows about audi's a little more than me. Thanks to anyone with some input.

Please don't judge me if i misspelled anything, im on my phone. (my spelling is a little derrr anyways) Thanks again guys!!!!!

(EDIT)I got my vag-com today and this is the results.

VCDS Version: Release 11.11.4 (x64)
Data version: 20120807

Tuesday,25,September,2012,17:43:25:22025

Chassis Type: 4B - Audi A6 C5
Scan: 01 02 03 06 08 15 16 17 18 22 34 35 36 37 45 55 56 57 65 67
75 76 77

-------------------------------------------------------------------------------
Address 01: Engine Labels: 06C-909-559-ASN.lbl
Part No SW: 8E0 909 559 D HW: 8E0 909 059
Component: 3.0L V6/5V G 0003
Coding: 0016752
Shop #: WSC 02325 785 00200
VCID: 36639BC4421174A8CB9

3 Faults Found:
18057 - Powertrain Data Bus
P1649 - 008 - Missing Message from ABS Controller
19760 - B1
P3304 - 001 - Exhaust Cam Pos. Sensor (G300) / Crank Pos. Sensor (G28) Incorr. Correl. - MIL ON
16955 - Brake Switch (F)
P0571 - 008 - Implausible Signal
Readiness: 0010 1101

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 01V-927-156.lbl
Part No: 4B0 927 156 FF
Component: AG5 01V 3.0l5V USA 1213
Coding: 0001002
Shop #: WSC 09218 444 53691
VCID: 70EF6DDC60F51A98D15

1 Fault Found:
17087 - Brake Switch (F)
P0703 - 003 - Electrical Malfunction
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 4B0-820-043-MY2.lbl
Part No: 4B0 820 043 AC
Component: A6-Klimavollautomat 0105
Coding: 00110
Shop #: WSC 02325
VCID: 5BB52A70C97389C0147

2 Faults Found:
01592 - Air Quality Sensor (G238)
57-00 - Electric Circuit Failure
01314 - Engine Control Module
49-10 - No Communications - Intermittent
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 4B0-920-xxx-17.lbl
Part No: 4B0 920 981 N
Component: KOMBI+WEGFAHRS. VDO D09
Coding: 02262
Shop #: WSC 09218
VCID: 3169A8D8FB7F53909EB
WAUVT64B32N101984 AUZ7Z0A2032488

2 Faults Found:
00771 - Fuel Level Sensor (G)
30-10 - Open or Short to Plus - Intermittent
01176 - Key
07-10 - Signal too Low - Intermittent
End ---------------------------------------------------------------------

[Camelian]

I know that this is more than the $75 scan check but this has come in VERY handy for me! It can really help troubleshooting so your not replacing things that dont need replacing. Im not really sure how much help people will be able to give you without having the codes. Hope you can figure it out. From my understanding running lean conditions can really do damage. (anyone correct me if im wrong) Goodluck.


http://www.ecstuning.com/ES9950/

[builditup]

I know that this is more than the $75 scan check but this has come in VERY handy for me! It can really help troubleshooting so your not replacing things that dont need replacing. Im not really sure how much help people will be able to give you without having the codes. Hope you can figure it out. From my understanding running lean conditions can really do damage. (anyone correct me if im wrong) Goodluck.


http://www.ecstuning.com/ES9950/

Thanks man, yea running lean can really kill a motor, im afraid of burning a piston. But yea i've seen that scanner i may just step it up and get the vag-com but i dont know to many people in the area that it would help other than me...... still may do it.....worst comes to worst

[Camelian]

Thanks man, yea running lean can really kill a motor, im afraid of burning a piston. But yea i've seen that scanner i may just step it up and get the vag-com but i dont know to many people in the area that it would help other than me...... still may do it.....worst comes to worst

Yeah, vag-com is obviously the true way to go. Although the scanner is very handy,always in the glovebox and there really is no learning curve to it, vag-com does do much more.

[JonMS]

Just get an eBay cable for 10 dollars and "find" an older version vag-com on the internet.

[ebi718]

Yeah, vag-com is obviously the true way to go. Although the scanner is very handy,always in the glovebox and there really is no learning curve to it, vag-com does do much more.

^^ This. It more than pays for itself, over time. Mine's also always in the glovebox.

[builditup]

I'll probs be going with the vag-com but i wish i could fix this thing without buying the vag tho. any other help would be great guys.

i've also checked the cam position sensors as well.

[Scotmbb107]

Pay the hour diagnosis and take it to a dealer. Everyone on here calls them stealerships but taking it to an indy for a cheaper diagnostic fee sometimes doesn't work out to your advantage. Nice thing about a dealer is they work on these cars all day long, seen almost everything that goes wrong with Audis and if not has many resources like Audi tech line, scan tools, leak detection tools, etc...

[builditup]

Finally got some codes ran. OK so the only three I had were

18057
19760
16955
I hope this will help a little.

[JonMS]

18057 - http://wiki.ross-tech.com/wiki/index...7/P1649/005705

16955 - http://wiki.ross-tech.com/wiki/index...5/P0571/001393

19760 - Try reading this thread http://www.justanswer.com/audi/4kug5...-0-engine.html

[eejimm]

18057 - Powertrain Data Bus: Missing Message from ABS Controller P1649 - 35-10 - - - Intermittent
Wiring problem or bad ABS controller or blown fuse to ABS

Code 16955 - Brake switch: Implausable signal
Brake switch at pedal is bad or wiring problem there

Couldn't find any reference to a 19760 - what were these codes pulled with? They don't seem to have anything to do with your problem...
Jim

[builditup]

Well I'm guessing the first and third go with the abs module being bad......but the other I saw on the forum was something about b1 cam position and crank position? Anyone know what that could be? I mean I know they could be bad but is there a way to see if that's the case? Any help would be great thanks

[JonMS]

Well I'm guessing the first and third go with the abs module being bad......but the other I saw on the forum was something about b1 cam position and crank position? Anyone know what that could be? I mean I know they could be bad but is there a way to see if that's the case? Any help would be great thanks

Read my link. He was pulling the same code as you and fixed it in the end.

[builditup]

Pulled will a cheap scanner. Thanks for the links sorry I didn't see them at first.

[builditup]

So if I read the link correctly the issue the other guy had was the cam adjuster was not working properly and he replaced it and it fixed it? If this is what I need to do I really want to hook it to a vag or something to confirm that this is the issue before spending 800$ on that part. Do you think my cheap ass scanner could have read a code that's not right or anything like that?

[builditup]

Got my Vag-com today and posted the codes up top. I pulled out the "No fault" ones btw. As i read the codes i saw cam and crank position sensors, this is my first time using a vag-com but im not a car dummy so im thinking this is it. Saw a few other things but im not sure whats they mean. Any helpful info would be great. Thanks guys