The Thread Build (BuildUp:)

[macanic21]

ugh, my last post didn't.... I'm going to try to post some pics up soon.

[macanic21]

Friday,04,March,2011,10:35:37:46602
VCDS Release 10.6.3: Generic OBD2
Mode 03: Emission related fault codes

Address 10 (Engine): 1 Fault Found:
P1582 - Idle Adaptation Limit Reached

Pending DTC's
Friday,04,March,2011,10:35:59:46602
VCDS Release 10.6.3: Generic OBD2
Mode 07: Pending emission related fault codes

Address 10 (Engine): 2 Faults Found:
P0172 - Fuel Trim; Bank 1: System Too Rich
P0103 - Mass Air Flow Sensor (G70): Signal too High

New fault codes as of the drive home last Sunday night. I'm going to do a throttle body adaptation in a few minutes.


Do you guys think I should get another MAF? Should I call C2?

[911_fan]

FWIW I had to replace my MAF when I first ran PEM.

What does it drive like when you slowly dip into the throttle? (like going from closed to open loop, but without flooring it) Does it hesitate/jerk on you?

[Rolands76xx]

Im getting that slight jerk / hesitation on my aeg turbo..., same dtcs for signal too high on maf and running rich, also catalyst under threshold.... Buti just puta brand new maf in and helped a lil .... Maybe exhaust leak?

[macanic21]

It does slightly hesitate and sometimes spit and sputter at higher RMP. At lower RPM it does sometimes buck a little. It is still having the problem of maintaining a steady RPM. If I hit the gas so the RPM goes to 2500 and then hold it there it will get there and then drop 500, come back to 2500 and then instantly drop back down. It won't hold steady. TB pot 1 voltage was constant but pot 2 was fluctuating.

I also saw a throttle body adaptation out of range code after i did a TBA. Not sure what that means. I'll try to get more info on that. I cleared it and did another TBA. I'll see if it comes back.

[911_fan]

See if you can get your hands on a goof MAF and see what happens.

[macanic21]

Friday,04,March,2011,15:43:30:46602
VCDS Version: Release 10.6.3

Address 01: Engine Labels: 037-906-259.lbl
Control Module Part Number: 037 906 259
Component and/or Version: BFI ABA S2 003 HS V08
Software Coding: 00000
Work Shop Code: WSC 00000
VCID: D9B7FB4E699F
1 Fault Found:

17990 - Idle Adaptation Limit Reached
P1582 - 35-00 - -

Readiness: 0000 0000


After replacing MAF with spare and clearing all codes.

Friday,04,March,2011,15:45:52:46602
VCDS Release 10.6.3: Generic OBD2
Freeze Frame Data for address 10
PID02 DTC that caused freeze frame data storage: P1582
PID03 Fuel system 1/2 status: Open loop, conditions for closed loop not yet satisfied
PID04 Calculated load value: 8.6 %
PID05 Engine coolant temperature: 15 °C
PID06 Short Term Trim - Bank 1: 0.0 %
PID07 Long Term Trim - Bank 1: 0.0 %
PID12 Engine RPM: 1424 /min
PID13 Vehicle speed: 0 km/h

As soon as I clear the 1582 it comes back.

[macanic21]

Swapped the original MAF back in and had the same P1582 problem. Do you think I have a vacuum leak? I'm getting a new MAF tomorrow, however its not from VW.... We'll see if it helps. Still had the idle adaptation out of range thing too.

I unplugged the MAF and the difference was almost unnoticeable (slightly worse RPM Hang and oscillation at 2500 RPM). Got the P1582 and MAF circuit to low code. I'm starting to think its not a MAF problem. No idea what it could be though. I already replaced the solenoid that is mounted to the air box a while ago.

The car has 300 mi on it since it was put back together. the CEL only came on in the last 30.

[jsneed]

sounds like a vacuum leak... do you have a boost guage? check manifold vacuum?

[macanic21]

What should manifold vacuum be with the 276* cam?

[jsneed]

What should manifold vacuum be with the 276* cam?

couldn't say exactly, altitude has a lot to do with it, but I'd say if you're not seeing at least 12 in/hg, you should be looking for vacuum leaks.

[macanic21]

Car pulls 12-14" depending on where its idleing. I blocked off all vacuum ports except the FPR port. nothing made a difference. checked all manifold bolts & sprayed WD-40 around seals and found nothing. I don't think its a vac leak. if it is I have no idea where it would be leaking at. I'm going to swap the TB tomorrow and reseal the brass vacuum tap on the TB.

now what....

[macanic21]

Got a new Napa MAF. I think its junk, it threw low signal code immediately. I tried it with that old TB and it hardly ran at all and new MAF. It smelled very rich and stalled a lot. I put the better TB back in and it is better but it still has a problem idling down. When I hit the clutch at about 1500 RPMs (because if I don't it bucks), the idle will actually go up to almost 2k before dropping back to 1500, and then down to 1100 where it is supposed to be. It seemed to get better as I drove longer. I'll see if the MAF code ever goes away. If it doesn't I'm going to try to return the MAF and get a factory one.

Is there a place to get factory parts other than the dealership?

Here are the latest codes. I like the 2nd one!

Saturday,05,March,2011,11:45:02:46602
VCDS Version: Release 10.6.3

Address 01: Engine Labels: 037-906-259.lbl
Control Module Part Number: 037 906 259
Component and/or Version: BFI ABA S2 003 HS V08
Software Coding: 00000
Work Shop Code: WSC 00000
VCID: D9B7FB4E699F
3 Faults Found:

17990 - Idle Adaptation Limit Reached
P1582 - 35-00 - -
00543 - Maximum Engine Speed Exceeded -- Engine Warranty VOID! ;-)
35-10 - - - Intermittent
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 35-10 - - - Intermittent

Readiness: 0000 0000

[macanic21]

I went on about a 1 hour drive and found a few things. I found that what the car doesn't like is very light throttle driving. If I drive @ 35 through town, after a few min. it will start bucking and trying to stall. On the way home this happened again and got so bad that it stalled and I couldn't even drive. I restarted it and it ran for a few seconds and died again. I yanked the NAPA MAF and the car started and ran better than it has since I put it in. The idle still hangs a little but seems better. I'm going to try to return the MAF and get a OEM one. Anyone know where I can get one?

[macanic21]

WELL... Here's the latest.

Messed around with the car tonight and it was totally ignoring the MAF. I could disconnect it and it would run better and the idle would not fluctuate nearly as much. On a whim i went and got the FPR out of the parts car. That was the first part i swapped in that actually made it run better!!. Cleared all codes and took it for a drive. The idle adaptation code is gone, CEL stayed off but here are the codes I pulled.

3 Faults Found:

16487 - Mass Air Flow Sensor (G70): Signal too High
P0103 - 35-10 - - - Intermittent
00543 - Maximum Engine Speed Exceeded -- Engine Warranty VOID! ;-)
35-10 - - - Intermittent
16556 - Fuel Trim; Bank 1: System Too Rich
P0172 - 35-00 - -

Readiness: 0000 0000


The fuel trim code only came up after it sat and idled for a while after the run. I used to have the MAF signal too high code.....

I'll post a vid of the way it runs now in a few days hopefully. Should I order a Bosh MAF?

[911_fan]

New MAF 100%. Get new...not a "known good used one".

[macanic21]

Well this last test was with a new MAF from NAPA. Since I'm still getting a code I'm going to swap my old one back in with this new FPR. If I still get a code I'm gona get a Bosh one.

[mizzuh]

did you check your blinker fluid? I always have the darndest trouble with keeping that crap topped off.


ps, awesome build!

[macanic21]

http://www.youtube.com/watch?v=gSpt_J42XKo

Here's a vid of how its acting now. Sorry about the buzzing in the beginning. I had the camera resting on the steering wheel. Thats why I gotta get rid of the BFI stage .5 rear...

[MonkeyBusiness]

When I first had my car flashed it would do something similar to that hang around 1500 then come back down to 1000. My only advise is to drive it around and see if it gets better.

[macanic21]

Got the new Bosh FPR and MAF in last night. It is better but still has the same problem. I'm going to call C2 sometime and see what they have to say. I don't see why this would be a problem with my TB, I'm not getting any codes for that.

Could it bet the coolant temp sensor (a local VW enthusiast said to replace that)? The problem is better after the car warms up.

[macanic21]

Called C2 yesterday and they seemed pretty helpful. I emailed Ryan with a description of my problem and he is supposed to get back to me with which blocks he wants me to log.

All other codes are gone except bank 1 rich.

[macanic21]

http://www.flickr.com/photos/6211289...in/photostream
Engine bay pic, sorry about the poor quality...

So apparently I need to be running a bigger MAF housing for this chip. I didn't know that. Did anyone else know what? What exactly do I need to be using and can I make it work with my stock air box?

[02vwgolf]

Yeah i just read this and was wondering if you knew that, i have the c2 chip on my mk4 aegT and i had to get a larger housing for the maf to run it with their chip, I dont have a link to where to find it because i got mine off here used in the forced induction classified but that definitely helped out my car

[PBWB]

Maniac...Just noticed on youtube that you went to PCT.....Small world, cause that's where I went to take my oral and practical tests to get my Airframe and Powerplant License.

[jsneed]

http://www.flickr.com/photos/6211289...in/photostream
Engine bay pic, sorry about the poor quality...

So apparently I need to be running a bigger MAF housing for this chip. I didn't know that. Did anyone else know what? What exactly do I need to be using and can I make it work with my stock air box?

MAF signal too high... yep, sounds like that's your problem... You should be able to find a bad VR maf pretty easily and put your sensor in it.

[macanic21]

Will the VR MAF bolt up to my stock air box?

[jsneed]

Will the VR MAF bolt up to my stock air box?

I think no.. I can't remember exactly, but I remember the VR box being different. couse it's the same car, you could always get a whole VR airbox and it would look completely stock.

[911_fan]

So apparently I need to be running a bigger MAF housing for this chip. I didn't know that. Did anyone else know what? What exactly do I need to be using and can I make it work with my stock air box?

I'm running C2 stage 2 chip for 272* and up cam.

Wait....what? Since when do you need to run a VR MAF housing with this tune? Unless I'm way off, or they changed the tune somewhere down the line, the Stage2 C2 is more or less the same as the Stage2 BFI PEM. I never upgraded my MAF.

[PBWB]

Yea, what's going on here.....The only tune that C2 produces that you would need a VR maf housing for is the 42# turbo software. I thought I kept reading that this car was n/a, then might be turbo for some reason, and back and forth. So what's the dealy?

[911_fan]

C2 website lists nothing for upgrading your MAF on N/A ABA software....just the street/race versions. (which street=all smog eqpt / race=smog delete)

Sorry, not trying to start a debate here, but them saying you need to upgrade your MAF for this software is odd. What's going to probably happen is you will put the bigger MAF on, and it wont even hold idle because it's running so lean. There is something funky going on between your MAF and throttle body. Especially since you mention the light throttle issues. Too bad you don't have a wide band hooked up to see what the A/F is doing. (thats a perfect indicator to see how your MAF is working)

[jsneed]

Yea, what's going on here.....The only tune that C2 produces that you would need a VR maf housing for is the 42# turbo software. I thought I kept reading that this car was n/a, then might be turbo for some reason, and back and forth. So what's the dealy?

I seem to remember that being refered to as C2 stage 2 for a long time... I assumed it was a turbo car.

[macanic21]

"Do you have the required larger maf housing?" (From Ryan @ C2 in a reply to my email)

I actually bought the chip from BFI on their black Friday sale. It is the chip that codes out the rear O2 sensor so you don't get a CEL for cat inefficiency (IDK if this is the race chip???). I was under the impression that they were just reselling the C2 chips. Is this incorrect?

I don't need a wide ban to tell you its rich. Even the stock O2 sensor says its rich. It sets the CEL for Bank 1 Rich! You can smell it, its that rich... Its rich when it idles, its rich when I cruse, its rich when you floor it.

I asked him what housing I need and all he replied was - "Do you have a VAG-COM cable?" So, I don't know what he is going to tell me. I hope its something though....

BTW it IS an NA motor. Biggest valves, P&P, soon to be AEG lower mani w/custom upper

[911_fan]

Let me clear up the C2/BFI chip stuff first.....

C2 has 2 versions of 2 versions of the chip. (confused?) There is the street and street/cam version. The street tune keeps everything smog compliant. I.E. Rear O2 and SIA active. Then there is the race/cam version. Same deal, but with the smog crap coded out. The PEM is like the C2 race version, only they call it stage 1/2. (1 for no cam, 2 for 'any' cam)

Now, you DON'T need anything but the stock MAF for this chip. Remember my motor? Stock 2.0 MAF. PERFECT fueling. I said this a couple pages ago.....when I first put the chip in, I had a lean issue that turned out to be the MAF. And when I replaced it with a new one, my problem went away. This tune will bring out ANY issue your motor has. This goes for worn MAF sensors, vacuum leaks, faulty throttle bodies, ect.

I would be shocked if putting a larger MAF housing does anything but make you run super lean. I would also suggest PMing Jefnes3 (Jeff Atwood). He programed that software.

[macanic21]

Thanks for that Travis!

I thought about the TB being a problem before but I'm tired of just throwing expensive parts at this thing. I have a brand new MAF, O2 and a vac leak would be causing a lean condition, not a rich one. I wanted someone to tell me from experience what is going on with this thing. Thats why I asked Ryan from C2. The TB is not new, but the again there are no codes for it either.

I defiantly have the race version.

Who does Jeff work for?