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Hi to all clever people. Just as I decide that we must part company My RS decided to play up!

The ICM has aways been there and I believe is the Remap done by APC 5 years ago!

The two coolant one I can look at.

The others I am unsure of. Is it a vacuum leak, MAFs or N75? It rough idles frequently now and doesn't always give me full boost and then kicks in.
I am in Exeter, Devon and don't know of a RS guru down here but I have a very good mechanic if I cant do it but point him in the right direction!


16985 - Internal Control Module
P0601 - 001 - Memory Check Sum Error
17863 - Exhaust Gas Temp Sensor 1 (G235)
P1455 - 008 - Implausible Signal - Intermittent
18393 - Coolant Control Module 2 (J671)
P1985 - 002 - Malfunction - Intermittent
18308 - Coolant Fan Control 2
P1900 - 004 - Open or Short to Ground - Intermittent
17535 - Fuel Trim; Bank 1 (Mult)
P1127 - 002 - System too Rich - Intermittent
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 001 - - Intermittent
16686 - Cylinder 2
P0302 - 001 - Misfire Detected - Intermittent
Readiness: 0000 0001

http://www.rs6.com/showthread.php/32494 ... ith-photos

Perfect link for the EGT

Hard to trust the error codes from a dodgy ECU, but it sounds like a fan's blown a fuse.

The fuelling and misfire might be linked ot the EGT sensor.

Log your MAF readings, too.

The ecu is probably fine, but later rs6 software requires a code patch to increase boost pressure. No patch and it will throw the p0601 code.

I would sort the map out first, then start to deal with the other issues. If you Disconnect the battery, the p0601 code should dissappear for a couple of weeks

Thanks Guys. I did check the EGT and on idle both were 5C away from each other. I guess it did say intermittent. Will drive it with the laptop on the seat and see what it says in the higher range. Only went up to 385 in the garage with a bit of Rev. The air filters were very black so did an early swap on them too.

What should the MAF's say and which box is it? There are loads of MAF boxes on the software. EGT was easy as there are only two!

Measuring block 002 will give you the MAF readings in the last 2 boxes.

Tell us what is in group 032 also.

learning loads here its a pretty cool tool!

16.19 20.42 405 415
17.75 22.78 410 415
18.83 24.39 410 420
22.33 27.03 415 425
23.53 27.78 420 425
22.58 29.61 420 430
This was under load with the left figures being MAF 1 and EGT 1

The right or Bank 2 Maf is always higher and EGT on bank two is always higher!

Here is tick over
3.58 3.97 250 295
3.56 4.03 250 295
3.94 4.36 250 295
3.67 4.03 250 295
3.58 3.97 250 295

That looks better 45degree C between 1 and 2 here MAF are similar.


Heavy load

183.28 203.58 600 615
179.83 203.81 540 530
174.44 198.47 565 580
173.14 198.47 585 600
170.61 198.47 525 525
158.78 178.33 555 575
156.53 175.11 520 520

I didn't see your post about the other blocks until I was home !

Hi Clever people. I am guessing MAF as I presume they should have the same readings? From the earlier post I can see a huge difference in Exhaust temps so I guess Bank one isn't burning its fuel hence a fuel smell in the car sometimes.



Address 01: Engine (4D1 907 558 )

12:08:51 Group 002: General
760 /min Engine Speed (G28)
20.3 % Engine Load
3.14 g/s Mass Air Flow (G70) Bank 1
4.14 g/s Mass Air Flow (G246) Bank 2

12:08:51 Group 032: Lambda Control (Mixture Adaptation)
-0.9 % Adaptation (Idle) Bank 1 Sensor 1
-10.2 % Adaptation (Partial) Bank 1 Sensor 1
-0.9 % Adaptation (Idle) Bank 2 Sensor 1
-7.8 % Adaptation (Partial) Bank 2 Sensor 1

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Address 01: Engine (4D1 907 558 )

12:10:01 Group 002: General
2360 /min Engine Speed (G28)
105.3 % Engine Load
48.17 g/s Mass Air Flow (G70) Bank 1
64.14 g/s Mass Air Flow (G246) Bank 2

12:10:01 Group 032: Lambda Control (Mixture Adaptation)
-0.9 % Adaptation (Idle) Bank 1 Sensor 1
-10.2 % Adaptation (Partial) Bank 1 Sensor 1
-0.9 % Adaptation (Idle) Bank 2 Sensor 1
-7.8 % Adaptation (Partial) Bank 2 Sensor 1

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Address 01: Engine (4D1 907 558 )

12:15:26 Group 002: General
2000 /min Engine Speed (G28)
63.2 % Engine Load
24.19 g/s Mass Air Flow (G70) Bank 1
31.31 g/s Mass Air Flow (G246) Bank 2

12:15:26 Group 032: Lambda Control (Mixture Adaptation)
-0.6 % Adaptation (Idle) Bank 1 Sensor 1
-10.2 % Adaptation (Partial) Bank 1 Sensor 1
-1.3 % Adaptation (Idle) Bank 2 Sensor 1
-7.8 % Adaptation (Partial) Bank 2 Sensor 1

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Address 01: Engine (4D1 907 558 )

12:15:36 Group 002: General
4920 /min Engine Speed (G28)
84.2 % Engine Load
92.39 g/s Mass Air Flow (G70) Bank 1
107.97 g/s Mass Air Flow (G246) Bank 2

12:15:36 Group 032: Lambda Control (Mixture Adaptation)
-0.6 % Adaptation (Idle) Bank 1 Sensor 1
-10.2 % Adaptation (Partial) Bank 1 Sensor 1
-1.3 % Adaptation (Idle) Bank 2 Sensor 1
-7.8 % Adaptation (Partial) Bank 2 Sensor 1

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Address 01: Engine (4D1 907 558 )

12:15:39 Group 002: General
6240 /min Engine Speed (G28)
142.9 % Engine Load
195.00 g/s Mass Air Flow (G70) Bank 1
204.83 g/s Mass Air Flow (G246) Bank 2

12:15:39 Group 032: Lambda Control (Mixture Adaptation)
-0.6 % Adaptation (Idle) Bank 1 Sensor 1
-9.4 % Adaptation (Partial) Bank 1 Sensor 1
-1.3 % Adaptation (Idle) Bank 2 Sensor 1
-7.0 % Adaptation (Partial) Bank 2 Sensor 1

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

Your MAFs look OK. They are reading within about 10% of each other.

Have you cleared your codes to see what comes back?

Your -10% trim is a bit high, but within tolerances. It suggests that you have a slight boost leak.

I did but last night left the battery off so will take it for a run now to see if the checksum error goes too.
It was complaining about
Checksum
Coolant issue
Misfire Cylinder 2

Why do you think Bank 1 and 2 are such different temps in my EGT readings?
250c vs 295c

Ian

Running rich will cause the exhaust temps to be lower.

You might have a hole in a boost pipe which is opening up under load, a bit like a sphincter (bam looks up expectantly), which is causing over-fuelling.

sweegie wrote:The ecu is probably fine, but later rs6 software requires a code patch to increase boost pressure. No patch and it will throw the p0601 code.

^^That's interesting info.