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Boarder4life
06-09-2013, 03:28 PM
Hi I have an 08 a4 2.0 and I got the engine replaced with an 06 engine after an oil pump failure:-(. However ever since I got it back I seems to be running in limp mode when it warms up with boost peaking at 20 before its at full temp and peaking at 12 when it's warm. I already replaced spark plugs, coil packs, fuel rail sensor, pcv, and fuel filter. It's not throwing any codes but if I hit erase codes it runs great for a few miles then back to limp.

I'm running stage 2+ apr

Any input would be greatly appreciated

ROH ECHT
06-10-2013, 02:03 AM
My post below has gotten no responses on 5 forums. Without those codes we are kinda screwed ;[
Usually though if a power loss is present, but no codes are showing up, it will be a sensor going bad is what I've discovered in my own research. And the #1 O2 sensor is a majority cause with it.
But it may also be other, fuel or pressure, sensors reading data poorly. So as in my own case I'm just going to replace the most common causes and hope.
I'm nearing 100k miles anyhow so probably a good thing to do.

You have had no cel's right?

Boarder4life
06-10-2013, 02:47 AM
No I'm think I might take a look at the MAF?? Although you would almost think that should throw a code. Weird thing is there are no codes but if I hit erase codes it runs normally for a few miles before "limping" again.

ROH ECHT
06-10-2013, 10:46 PM
No I'm think I might take a look at the MAF?? Although you would almost think that should throw a code. Weird thing is there are no codes but if I hit erase codes it runs normally for a few miles before "limping" again.

Yes, you would hope for a code. I had a bad maf with no code...b/c it was not completely bad..."yet". The only thing that pointed to the maf was the data logged from the intake air mass. With my amount of horsepower, the int-air mass didn't add up. It was reading a low volume without any error codes. So, you really kinda gotta know what it(whatever sensor it is) should be reading and if low replace it or just wait until it gets bad enough to allow the creation of a rare and exotic "CODE"http://i1205.photobucket.com/albums/bb434/rohecht/mafvolume.jpg (http://s1205.photobucket.com/user/rohecht/media/mafvolume.jpg.html)

ROH ECHT
06-10-2013, 10:52 PM
This is why I'm hoping the thrust sensor will correct my own issues...b/c my low fuel pressure readings have been reading low even with a new lpfp and filter.

http://i1205.photobucket.com/albums/bb434/rohecht/lpfp.jpg (http://s1205.photobucket.com/user/rohecht/media/lpfp.jpg.html)

Boarder4life
06-21-2013, 06:36 PM
Thanks for the replies. Didn't get anywhere yet but I just ordered my Ross tech cable so I can retire my "el cheapo" v-checker and hopefully get something figured out. I'll def post if I getting a solution.

Boarder4life
06-22-2013, 12:52 PM
Just got the g247 fuel sensor code again today. I was doing a second gear pull and around 5500 rpm got a loss of power/shaking. No flashing lights just the code. Replaced the g247 about 1000 miles ago. Anyone else been through this?

Boarder4life
06-22-2013, 02:15 PM
Saturday,22,June,2013,15:45:32:15230
VCDS Version: Release 11.11.6
Data version: 20121223



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


Address 01: Engine (8E1 910 115 G)

15:45:27 Group 231
4.81 bar Pressure
4.98 bar Pressure
52.5 % Load

Saturday,22,June,2013,15:59:34:15230
VCDS Version: Release 11.11.6
Data version: 20121223


Address 01: Engine Labels: 06F-907-115-AXX.lbl
Control Module Part Number: 8E1 910 115 G HW: 8E0 907 115 D
Component and/or Version: 2.0l R4/4V TFSI 0010
Software Coding: 0104010A180F0120
Work Shop Code: WSC 06335 000 00000
VCID: 2643139291DC73287A7
1 Fault Found:

000401 - Fuel Pressure Sensor (G247)
P0191 - 001 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 2
Fault Frequency: 1
Mileage: 112868 km
Time Indication: 0

Freeze Frame:
RPM: 0 /min
Load: 0.0 %
Speed: 0.0 km/h
Temperature: 52.0∞C
Temperature: 36.0∞C
Absolute Pres.: 1000.0 mbar
Voltage: 11.938 V


Readiness: 0000 0101
Saturday,22,June,2013,16:00:27:15230
VCDS Version: Release 11.11.6
Data version: 20121223


Address 01: Engine Labels: 06F-907-115-AXX.lbl
Control Module Part Number: 8E1 910 115 G HW: 8E0 907 115 D
Component and/or Version: 2.0l R4/4V TFSI 0010
Software Coding: 0104010A180F0120
Work Shop Code: WSC 06335 000 00000
VCID: 2643139291DC73287A7
1 Fault Found:

000401 - Fuel Pressure Sensor (G247)
P0191 - 001 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 2
Fault Frequency: 1
Mileage: 112868 km
Time Indication: 0

Freeze Frame:
RPM: 0 /min
Load: 0.0 %
Speed: 0.0 km/h
Temperature: 52.0∞C
Temperature: 36.0∞C
Absolute Pres.: 1000.0 mbar
Voltage: 11.938 V


Readiness: 0000 0101
Saturday,22,June,2013,16:03:47:15230
VCDS Version: Release 11.11.6
Data version: 20121223


Address 01: Engine Labels: 06F-907-115-AXX.lbl
Control Module Part Number: 8E1 910 115 G HW: 8E0 907 115 D
Component and/or Version: 2.0l R4/4V TFSI 0010
Software Coding: 0104010A180F0120
Work Shop Code: WSC 06335 000 00000
VCID: 2643139291DC73287A7
1 Fault Found:

000401 - Fuel Pressure Sensor (G247)
P0191 - 001 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 2
Fault Frequency: 1
Mileage: 112868 km
Time Indication: 0

Freeze Frame:
RPM: 0 /min
Load: 0.0 %
Speed: 0.0 km/h
Temperature: 52.0∞C
Temperature: 36.0∞C
Absolute Pres.: 1000.0 mbar
Voltage: 11.938 V


Readiness: 0000 0101

Boarder4life
06-22-2013, 02:16 PM
sorry must've hit copy. there was only 1 code

Boarder4life
07-09-2013, 07:27 PM
SOLVED!!! Finally got this figured out. Cleaned the MAF = nothing. Replaced the MAF = my car is back!!! No longer in limp mode but I still get the fuel sensor code and a slight stutter at 5500-6000 rpm. Thanks for the replies ROH ECHT. Btw which block did you use to log lpfp?