Misfiring at Idle

[MikeS]

I am having issues with misfiring. I bought an AWE stage 3 kit from another member here, and it was installed 4 months ago. I did not have misfires at first, but I changed the plugs because my car had 91k miles on it and it still had the stock plugs. I switched to the BKR7E's and gapped it to .028. A few days later is when the CEL first came on for misfiring. I tried opening the gap a little but that only made it worse. I switched back to the platinum plugs and I immediately felt like it was running better, but it still seems to hesitate at idle. I did not change the gap on the platinum plugs, I left at the stock gap. I am also getting a code for my rear O2 sensor, but will a bad rear O2 sensor cause a misfire? The misfiring is when the engine is cold, but once it warms up it runs a lot smoother. Here is the fault codes pulled from VAG-COM, along with block 15 and 16, and my reading from block 32. Can you guys point me in the right direction?

Control Module Part Number: 8D0 907 551 M
Component and/or Version: 2.7l V6/5VT G 0002
Software Coding: 06711
Work Shop Code: WSC 40709
7 Faults Found:
16524 - Oxygen (Lambda) Sensor B1 S2: No Activity
P0140 - 35-10 - - - Intermittent
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16685 - Cylinder 1 Misfire Detected
P0301 - 35-00 - -
16687 - Cylinder 3 Misfire Detected
P0303 - 35-00 - -
16690 - Cylinder 6 Misfire Detected
P0306 - 35-00 - -
16686 - Cylinder 2 Misfire Detected
P0302 - 35-00 - -
16688 - Cylinder 4 Misfire Detected
P0304 - 35-00 - -

http://spreadsheets.google.com/ccc?k...Sz0YpZEw&hl=en
http://spreadsheets.google.com/ccc?k...rN2j26SQ&hl=en

Readings from block 32:
Group A: '032
@idle B1S1 @part B1S1 @idle B2S1 @part B2S1
TIME +/-10% +/-10% +/-10% +/-10%
MARKER STAMP % % % %
0 1.9 -12.5 1.7 -14.1
0.4 1.9 -12.5 1.7 -14.1

[MikeS]

Bump!

[Rated S]

If you're running colder plugs they can misfire @ idle when they are still warming up.
In terms of the o2 sensors, I think I recall them being able to cause misfires if they are broke.

[MikeS]

I thought I read a front O2 sensor can cause a misfire, but the rears only monitor the exhaust gases but do not affect the drivability. Currently I have the NGK PFR6Q's which is what I thought were the stock plugs. These are the plugs that used to be listed on AWE's website that was included in their stage 3 kits.

[Rated S]

I thought I read a front O2 sensor can cause a misfire, but the rears only monitor the exhaust gases but do not affect the drivability. Currently I have the NGK PFR6Q's which is what I thought were the stock plugs. These are the plugs that used to be listed on AWE's website that was included in their stage 3 kits.

Youre are correct.
Disregard my last post as it just shows my inability to read.

[MikeS]

Anyone else have a suggestion?

[volks88]

wow! i had the exact same thing happen. installed the kit, no problems. little time in and it misfires. changed plugs back to the iridiums and it was better but still not fixed. wanna know what i did? look for my engine part out thread lol.

[MikeS]

That's not what I want to hear.

[AudiSportB5S4]

first off your numbers in 032 show that you're running rich..... 032 is Long Term Fuel Trims... was this file "custom tuned" for the member?

What injectors? If they are Green Giants, they need to be 90* turned each one... I had the same issue, it's a bitch to do but you have to... just take off the Y pipe make sure they are all turned. you can spray down there with WD40 to get it lubey to want to turn. You dont have to lift the fuel rail. But thats ahead of the game. tell me more!

[MikeS]

first off your numbers in 032 show that you're running rich..... 032 is Long Term Fuel Trims... was this file "custom tuned" for the member?

What injectors? If they are Green Giants, they need to be 90* turned each one... I had the same issue, it's a bitch to do but you have to... just take off the Y pipe make sure they are all turned. you can spray down there with WD40 to get it lubey to want to turn. You dont have to lift the fuel rail. But thats ahead of the game. tell me more!

I am pretty sure it is just the OTS tune. But it is the older file. I know he was using a MBC (in place of the N75 valve) and a TCD which I am as well now. I know this sounds stupid, but how do I tell if they are Green Giants? I know the top of the injector is green.

I bought the kit form S4M3, so Borris if you are in here, care to add?

[AudiSportB5S4]

yeah, they are green :) hey, those are things I've asked before too... lol

you have to make sure that the plug on the injector is facing 90* to either fender wall... so the driver sides to the driver and pass to pass. etc... believe it or not that does it, the injectors (GGs) are really sensitve to the way they are oriented...

did you look @ AWE's instructions when installing it, if you can, go to their page, go to FAQ look how to install RSK04 kit, they have special notes telling you to face the injectors @ the fender walls

[MikeS]

yeah, they are green :) hey, those are things I've asked before too... lol

you have to make sure that the plug on the injector is facing 90* to either fender wall... so the driver sides to the driver and pass to pass. etc... believe it or not that does it, the injectors (GGs) are really sensitve to the way they are oriented...

did you look @ AWE's instructions when installing it, if you can, go to their page, go to FAQ look how to install RSK04 kit, they have special notes telling you to face the injectors @ the fender walls

Ok thanks. I didn't do the installation, but I will check that to see if they are pointed correctly.

[MikeS]

The plugs were pointed towards the front so I turned them toward the fenders. Should they be extremely easy to turn? Anyways, it seemed to be running smoother, but according to blocks 15 and 16 I was still getting misfires. Today the check engine came on and now I am getting lean codes! So what now? Here is the fault codes and block 32 readings.

VAG-COM Version: Release 311.2-N

Control Module Part Number: 8D0 907 551 M
Component and/or Version: 2.7l V6/5VT G 0002
Software Coding: 06711
Work Shop Code: WSC 40709
8 Faults Found:
16544 - Oxygen (Lambda) Sensor B2 S2: No Activity
P0160 - 35-10 - - - Intermittent
16805 - Warm Up Catalyst: Bank 1: Efficiency Below Threshold
P0421 - 35-10 - - - Intermittent
16815 - Warm Up Catalyst: Bank 2: Efficiency Below Threshold
P0431 - 35-00 - -
17544 - Fuel Trim: Bank 1 (Add): System too Lean
P1136 - 35-00 - -
17546 - Fuel Trim: Bank 2 (Add): System too Lean
P1138 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16688 - Cylinder 4 Misfire Detected
P0304 - 35-00 - -
16686 - Cylinder 2 Misfire Detected
P0302 - 35-00 - -

Block 32

@idle B1S1 @part B1S1 @idle B2S1 @part B2S1
+/-10% +/-10% +/-10% +/-10%
% % % %
7.9 -14.1 7.7 -14.8

[AudiSportB5S4]

wow holy crap. your LTFT's are terrible! its correcting itself way too much. 7.9% @ idle! i have -2.6 and i want to be leaned a little! lol....

the injectors are not hard to move, some are sonsabitches' haha and you really need a long blade flathead to get down there and push until they rotate. you can spray some WD40 in there to ease it along. make sure they are seated properly. i would bring it back to whoever did the install ask them to double check the injector work.

[AudiSportB5S4]

nvm, you said they were really easy to turn. yeah they could be easy but not like SUPER easy. idk. push down on the fuel rail at all the injector point see if it can go down a little or you have to make sure they used the injector spacers.

did you get all 6 to turn.... right towards right fender and left towards left?

[MikeS]

nvm, you said they were really easy to turn. yeah they could be easy but not like SUPER easy. idk. push down on the fuel rail at all the injector point see if it can go down a little or you have to make sure they used the injector spacers.

did you get all 6 to turn.... right towards right fender and left towards left?

I got all 6 to turn. Like I said it was very easy to turn, maybe they are not installed correctly?

[Rated S]

Are there spacers and longer bolts on the fuel rail.
The spacers you should be able to see when you lift the Y-Pipe.



The four round things to the right of the spark plug are the spacers.
I doubt that's your problem, but you never know.

[JDM EJ1 95]

i have the SAME issue

AWEs OTS file


Rear 02 codes.. misfires at idle.. poor gas mileage.. rich as hell


it is seeming like its the tune from AWE.

i never had issues until i switched to the updated file.. the old file was fine.

[MikeS]

i have the SAME issue

AWEs latest OTS file


Rear 02 codes.. misfires at idle.. poor gas mileage.. rich as hell


it is seeming like its the tune from AWE.

i never had issues until i switched to the updated file.. the old file was fine.

I am using an older version of AWE's software. I bought it used so I am not sure which one. I beginning to think the injectors are not installed correctly with how easily I turned them. And can someone tell me what my 032 readings should look like? At least then I know when I mess with it if I am helping or hurting. Is there any other blocks I should be measuring to help figure out what the hell is wrong.

[JDM EJ1 95]

I am using an older version of AWE's software. I bought it used so I am not sure which one. I beginning to think the injectors are not installed correctly with how easily I turned them. And can someone tell me what my 032 readings should look like? At least then I know when I mess with it if I am helping or hurting. Is there any other blocks I should be measuring to help figure out what the hell is wrong.

I had the old socketed software.. like a few years old.. and my car ran perfect.


i recently switched to a Newer.. but still onot the newest.. AWE file because i wanted a racefile too.

and it started just soon after the switch.


its the SAME exact issue as yours... my injectors are installed fine.. even if they werent.. theyres no reason the computer should be correcting +7 at idle. but they havent been touched since my old file.. and they have been that way ever since i owned the car with no issues.

[AudiSportB5S4]

hey JDM and OP, my buddy just got a AWE stage 3 car and is having the same shit. terrible gas milage AND rear 02 sensor codes that he cant keep off.... hmmmm...

[AudiSportB5S4]

i mean you could always use lemmiwinks or unisettings to take some fuel out @ startup and idle but you shouldnt have to.

[JDM EJ1 95]

im going to email AWE this thread. I KNOW theres a bunch more people with the same issue.

[JDM EJ1 95]

i mean you could always use lemmiwinks or unisettings to take some fuel out @ startup and idle but you shouldnt have to.

my car runs rich all the time.. black fuel smoke out the exhaust.. and shoots fireballs constantly.


i need to log it.. but im 100% sure it is.. esp when i only am trapping 113 on the racefile. and 108 on the pump file.

[AudiSportB5S4]

lol yeah for sure. that is weakysauce. my neighbor has the car up at school right now but next time hes home im going to ECUx log his car. well see then.

JDM, drive out to CT. i ll log ya! haha

[JDM EJ1 95]

im gonna log the car sunday hopefully..

[JDM EJ1 95]

AWE said theyd take a look.


hopefully we can get some insight on the issue.

[AudiSportB5S4]

AWE said theyd take a look.


hopefully we can get some insight on the issue.

good stuff, can you reply in this thread if you get any idea, that would be cool

[JDM EJ1 95]

like i said i know theres more people with the same issues. i made a thread a few weeks back about it.

[MikeS]

What else can I log that might help point to the issue? That is if its not the software. It seemed like it was running fine when I first had it installed and there was a month or so the check engine light did not come on. Are you using a MBC and TCD?

[JDM EJ1 95]

nope

strait n75.


can you log timing.. i am curious to see what its doing.

[MikeS]

Which block? Measure at idle?

[JDM EJ1 95]

actually can you boost it..

because im having the same issues.. and my car is down on power.. i only trapped 108 at the track.

i want to see if yours is pulling timing at all in boost.

[MikeS]

Do you know which block? I will try and get a log tonight.

[JDM EJ1 95]

channel 20 is Timing retard per cyl


major blocks and rundown shown heree

http://www.audizine.com/forum/showth...hlight=logging


and maybe channel 31 for O2 readings on the same run

[MikeS]

Ok, are you using a air flow straightener? I am not, but someone suggested that might be part of the problem.

[JDM EJ1 95]

air flow straitener?

[MikeS]

air flow straitener?

Taken from another forum where I listed my issues. This was given to me by quickaudi on TNDUBS who quoted Mike from AWE.

also, per Mike @ AWE:
<quoting>
Here are my 10 steps to making sure your AWE RSK04 car is running perfectly.

1. Stock airbox with a hole cut out and a panel air filter. (No S-flo) (Make sure you have the big rubber o-ring in place in between the MAF and the air box)

2. Plastic flow straightener in front of MAF.

3. Car should be running stock spark plugs!!!!!!

4. New Green coolant temp sensor.

5. Injectors should be orientated so the connectors are facing the fenders of the car.

6. No vacuum or boost leaks.

7. Diverter valves are holding vacuum.

8. No tears in wastegate lines. (we are seeing more and more failures here as the cars get up in mileage)

9. Working Hitachi MAF.

10. Check the spider hose!

[JDM EJ1 95]

i have the stock airbox.. and the thing that the maf seats into with the o ring.. whats the flow straitener look like.

[MikeS]

I am not sure what the hell it looks like. I don't have one either. But I was told that might be part of the problem. Here are my logs for 20, 21, and 31. I did them all at the same time so the sampling rate sucks. Let me know if I need to do it seperately.

http://spreadsheets.google.com/ccc?k...D2jA0pBQ&hl=en

Also check out my last measurement of block 32 when my car was fully at operating temperature. It looks better right?

@idle B1S1 @part B1S1 @idle B2S1 @part B2S1
+/-10% +/-10% +/-10% +/-10%
% % % %
1.1 -12.5 1.3 -14.1