Rough Idle, Flashing CEL, surging RPM's

Soooooo,

Yesterday I noticed that my car started idling roughly and will surge up on it's own to 2000 rpms then back down. When it drops back down, I get a really rough Idle. When I am driving full throttle everything is fine and I don't have any roughness. I swapped out coil packs and it didn't resolve it. I am going to read the codes, but I think it may be the PCV or maybe a bad injector? What are your thoughts?

Could be pcv or intake manifold.

I ran my canbus cable and got the codes:

8 Faults Found:
008567 - Bank 1; System Too Lean off Idle
P2177 - 000 - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 0
Fault Frequency: 8
Reset counter: 255
Mileage: 98742 km
Time Indication: 0
Date: 2016.05.29
Time: 15:52:19

Freeze Frame:
RPM: 2503 /min
Load: 18.8 %
Speed: 102.0 km/h
Temperature: 93.0°C
Temperature: 54.0°C
Absolute Pres.: 990.0 mbar
Voltage: 13.462 V

000257 - Mass Air Flow Sensor (G70)
P0101 - 000 - Implausible Signal - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100000
Fault Priority: 0
Fault Frequency: 8
Reset counter: 255
Mileage: 97775 km
Time Indication: 0
Date: 2016.05.11
Time: 14:59:32

Freeze Frame:
RPM: 1727 /min
Load: 27.8 %
Speed: 70.0 km/h
Temperature: 90.0°C
Temperature: 50.0°C
Absolute Pres.: 990.0 mbar
Voltage: 13.716 V

000768 - Random/Multiple Cylinder Misfire Detected
P0300 - 000 - - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 99062 km
Time Indication: 0
Date: 2010.10.24
Time: 08:30:50

Freeze Frame:
RPM: 724 /min
Load: 17.2 %
Speed: 0.0 km/h
Temperature: 63.0°C
Temperature: 27.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.097 V

000769 - Cylinder 1
P0301 - 000 - Misfire Detected - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 0
Fault Frequency: 3
Reset counter: 255
Mileage: 99062 km
Time Indication: 0
Date: 2010.10.24
Time: 08:30:50

Freeze Frame:
RPM: 724 /min
Load: 17.2 %
Speed: 0.0 km/h
Temperature: 63.0°C
Temperature: 27.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.097 V

000772 - Cylinder 4
P0304 - 000 - Misfire Detected - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 99062 km
Time Indication: 0
Date: 2010.10.24
Time: 08:30:50

Freeze Frame:
RPM: 724 /min
Load: 17.2 %
Speed: 0.0 km/h
Temperature: 63.0°C
Temperature: 27.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.097 V

000770 - Cylinder 2
P0302 - 000 - Misfire Detected - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 99066 km
Time Indication: 0
Date: 2010.10.24
Time: 08:34:48

Freeze Frame:
RPM: 754 /min
Load: 14.9 %
Speed: 0.0 km/h
Temperature: 81.0°C
Temperature: 30.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.716 V

000771 - Cylinder 3
P0303 - 000 - Misfire Detected - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 99067 km
Time Indication: 0
Date: 2010.10.24
Time: 13:07:48

Freeze Frame:
RPM: 1326 /min
Load: 34.5 %
Speed: 16.0 km/h
Temperature: 51.0°C
Temperature: 36.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.097 V

008825 - Leak in Air Intake System
P2279 - 000 - - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 99068 km
Time Indication: 0
Date: 2010.10.24
Time: 13:10:08

Freeze Frame:
RPM: 760 /min
Load: 15.3 %
Speed: 0.0 km/h
Temperature: 84.0°C
Temperature: 36.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.716 V


Readiness: 0000 0000


Looks like I have quite a few things to check
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sterkrazzy said:

Could be pcv or intake manifold.

Click to expand...

That's what I was gonna say.

Sent from my Nexus 5 using Tapatalk

Im guessing coil pack.

I thought coil packs, so I removed the R8 ones I installed a couple of years ago and installed my stock ones that were still good and no change. I changed the PCV diaphragm/spring and when I was doing that I bumped the air intake tube. I noticed it was completely detached from the top of the turbo. I don't know how it came loose, but after re-attaching the intake tube everything was perfect, in fact it was a little smoother than before it happened. The pcv had a tear in it, so that added smoothness may be from that. Thanks everybody, and I am glad it was an easy fix and not going to cost me real money to repair.

Well, after everything going for a couple of days, today I started my car and after a few minutes when it warmed up, I got tons of smoke and burning oil smell. Would this be oil that was building up that is dropping into the turbo? Was the replacement pcv no good? I don't think I blew a head gasket all of a sudden...

Sooooo, after correcting all that CEL junk, after 5 hours of diagnosis, VW says my turbo seals on the k04 are bad and dumping oil into the exhaust. I will either have to have it rebuilt or buy another k04.....