Engine lights...help!

[Blueglue]

Hi folks,

 

Ive had my car five weeks and ive only driven it about half a dozen times its driving me mad.

An early 2009 TSI vRS with 101k on the clock so had the cam chain, tensioner changed. I also had a strong smell of fuel and misfire on cylinder 2 so had all the injectors replaced.

Picked the car up today after a £1300 total bill and it still has the same misfire!

Someone has mentioned a vac leak as it only misfires when the turbo kicks in, which is a good theory. Does anyone else have any pointers as id like to get it solved this weekend.

Heres a vid of the engine code coming on when accelerating.

Many thanks

Tom

 

[silver1011]

That flashing EML will have generated a fault code. This needs reading using VCDS / VAG-COM etc. rather than a generic code reader.

 

The fault code should get you close to diagnosing the fault. Check the code here...

 

http://wiki.ross-tech.com/wiki/index.php/Category:Fault_Codes

[bradh]

Faulty coil pack have you checked the spark plugs ?? Get it read as above you will have a stored error code get someone who has genuine vcds to scan it 

[Blueglue]

12 hours ago, silver1011 said:

That flashing EML will have generated a fault code. This needs reading using VCDS / VAG-COM etc. rather than a generic code reader.

 

The fault code should get you close to diagnosing the fault. Check the code here...

 

http://wiki.ross-tech.com/wiki/index.php/Category:Fault_Codes

 

 

Apologies i did the above post on my phone and i thought i copied and pasted the error codes over

Just as a bit of background:-

Previous owner replaced the following items between March - July 2018 - Throttle body, intake manifold, PCV Valve and tubing, fuel filter (possibly wiring harness to the coil packs) - Chasing this error code? well never know...

Between December 2018 and January 2019 i have replaced the cam chain and tensioner as it was 5 degrees out on stretch, all four injectors, all four coil pack, plugs

 

Heres a before chain replacement

 

and after (ignore the last few seconds as there was a road sweeper driving by!)

Ok i had some time on Saturday to go through the codes again which i can reproduce every time i drive the car. P0302 has been showing up since i purchased the car, but there was a strong smell of fuel so i had all the injectors replaced (garage where i bought it from paying labour and one injector for cylinder 2)

P130A would only come on if you drove the car for a long time on boost as it shuts down the cylinder to protect the engine.

P0507 has only appeared since i had my injectors and cam chain replaced last week although the end result with the above video has always been the same.

 

The car drives great now until you floor it under boost and then something is causing it to misfire like mad.

 

Details taken from my genuine Ross-Tech VCDS HEX-USB CAN

 

Saturday,26,January,2019,14:53:35:53877
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 18.9.1.0 (x64)
Data version: 20190114 DS296.0
www.Ross-Tech.com

VIN: TMBEF21Z192025701   License Plate:
Mileage: 162690km-101090mi   Repair Order:

 

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

                Address 01: Engine       Labels: 06J-907-115-CCZ.clb
Control Module Part Number: 1Z0 907 115 G    HW: 1Z0 907 115 F
  Component and/or Version: 2.0l R4/4V TFSI     0010
           Software Coding: 0203000C18070160
            Work Shop Code: WSC 73430 790 00000
                      VCID: 3978A664708BE782DA-806C
3 Faults Found:

000770 - Cylinder 2
               P0302 - 000 - Misfire Detected - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 162688 km
                    Time Indication: 0
                    Date: 2013.06.18
                    Time: 14:18:06

             Freeze Frame:
                    RPM: 4302 /min
                    Load: 94.5 %
                    Speed: 62.0 km/h
                    Temperature: 103.0°C
                    Temperature: 48.0°C
                    Absolute Pres.: 980.0 mbar
                    Voltage: 13.589 V

004874 - Cylinder Disabling
               P130A - 000 -  - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 162688 km
                    Time Indication: 0
                    Date: 2013.06.18
                    Time: 14:18:08

             Freeze Frame:
                    RPM: 5815 /min
                    Load: 96.0 %
                    Speed: 83.0 km/h
                    Temperature: 102.0°C
                    Temperature: 50.0°C
                    Absolute Pres.: 980.0 mbar
                    Voltage: 13.843 V

001287 - Idle Control System RPM
               P0507 - 000 - Higher than Expected. - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 162689 km
                    Time Indication: 0
                    Date: 2013.06.18
                    Time: 14:20:19

             Freeze Frame:
                    RPM: 1013 /min
                    Load: 14.5 %
                    Speed: 0.0 km/h
                    Temperature: 96.0°C
                    Temperature: 47.0°C
                    Absolute Pres.: 980.0 mbar
                    Voltage: 12.065 V

 

Measuring block 115 for boost pressure and actual came back fine (no boost leaks)

Measuring block 2 for MAF shows increase of g/s from 2g/s to 140g/s @ 5k revs before the misfires kick in

Measuring block 32 shows adaption bank sensor going no higher than 5% so it appears no obvious leak for fuel trim

 

 

Table attached for real-time cylinder misfire logs.

 

Im going to re align the throttle body and potentially check the PCV even though its less than a year old and not whistling or anything.

 

Is this all helpful to make some suggestions?

 

 

 

 

 

[TheClient]

I have a 2011 vRS CCZA. They can be a tricky engine when they play up.  What is the oil usage like in your car?  If severe, it could point to a problem with that cylinder mechanically.  

 

If throttle body reset doesn't solve the erratic idle, my only other guess would be a vacuum leak.

 

 

[Blueglue]

54 minutes ago, TheClient said:

I have a 2011 vRS CCZA. They can be a tricky engine when they play up.  What is the oil usage like in your car?  If severe, it could point to a problem with that cylinder mechanically.  

 

If throttle body reset doesn't solve the erratic idle, my only other guess would be a vacuum leak.

 

 

Unfortunately ive only driven it 200 miles since getting it. Its going to a VAG specialist for a diagnostic @ £80 per hour as the garage who did the cam chain and injectors were at a loss!

I suppose you get what you pay for.

Ill keep you updated. Fingers crossed its just a leak but i went over and under the car physically checking all the pipe work from turbo/intercooler and intake and couldnt find anything.

Annoying to say the least as it drives fantastic off boost now.

[Blueglue]

So Ive been going back to basics to check everything over and one of those tests was to cover the diaphragm pressure regulator hole on the PCV. Im led to believe this should not change pitch etc when covered. Mine seems to make a whirring noise albeit very faint as if there could be a small tear in the diaphragm?

I'm wondering if because its so small it generally operates ok until high revs when the air flow and pressure in the engine is highest?

Also the blow by on the oil cap seems quite excessive!

Also pulling the dipstick out doesnt do anything to the idle which ive read mean my engine is already adapted to too much air in the system. see here

 

 

Let me know what you guys thing?

 

 

 

Edited 10 February, 2019 by Blueglue

[Blueglue]

Just an update in case anyone else comes across this thread weeks or months down the line with a similar problem i have traced the fault to a blown rear main seal.

I created a video on how to diagnose it in VCDS is anyone is interested.

 

****I mention the throttle changing the fuel when i actually mean the ecu as the throttle is obviously the air!****

 

 

Edited 8 March, 2019 by Blueglue
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