Golf/GTI VI :: 2010 - Cylinder Misfire After APR Stage 1?


Jan 30, 2014

Had car flashed a little under a month ago to stage one. Car has 33k on it. Only other mods are the stage one Carbino. Weather has been extremely cold (5-15 degrees). Noticed a few days ago in 4th gear at WOT car was sputtering, acting almost as if the clutch was slipping. Last night, thinking it was the clutch, tried a 4th gear pull up a hill from 2000 RPM, car damn near stalls.

Today, heading home car goes into limp mode and barely got it in the driveway. Very rough idle pulling both the EPC and CEL codes P0300, P0301, and P130A. Below is the file from VCDS. After some searching it appears this may be coil pack related, it's too cold to start switching them around at the moment, but I wanted some keener eyes to see the info I pulled. I am considering replacing the packs with the R8's and getting new NGK plugs just to see what happens.

Address 01: Engine (CCT) Labels: 06J-906-026-CCT.clb

Part No SW: 1K0 907 115 AM HW: 1K0 907 115 AA

Component: 2.0l R4/4V TFSI 0030

Revision: AAH07--- Serial number:

Coding: 0403010A18070160

[Code] ......

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On the other hand, if the MIL is not on with the tester it can be seen that the cylinder 4 has misfire margin, only cylinder 4, every time. Now what I have done is to exchange the injectors, problem remains on cyl4.

-replaced the coils, problem remains on cyl4,
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Replaced the wheels, the problem is still there, now I want to replace the drive shafts.

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Yesterday while drive on the highway I had a sudden loss of power and a check engine light came on. My scanner which has become a standard item in my glove box indicated a misfire on cylinder 2 - P0302. I limped the car home, in 3rd gear I was having a hard time staying above 2000rpm at 60km/h. at lights I had to use hand brake so I could keep my foot on accelerator, revs were dropping below 300.

Today I replaced all the plugs (all 4 were still in good or better condition, #2 showed signs of a slightly rich burn and #3 a slightly lean burn), replaced all coil boots (no cracks, no burns, and still pliable), removed and cleaned all the injectors. Error code P0302 persists.

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My buddy has a 2010 tiguan and hes having a misfire issue. It has a hesitation and the interior lights seem to dim with the hesitation. Heres the codes that pulled up with vagcom.

4 Faults Found:
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: 148426 km

[Code] ....

What it might be?

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Details on the car : 2010 GTI 6spd 21,000 miles

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[URL] ....

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I have verified I have no spark on 4. I have confirmed the issue is not the spark plug, coil pack by swap and see method. My coil pack and plug work fine on another cylinder. I reset my cels and here are the new ones that pop up:

a 121 - gas pedal position sensor- doubt this would give me a no spark

a 304- Misfire on 4, (duh, like I needed to hear that)

a 030- bank one 02 -Doubt this would also give me a no spark condition)

In my testing:

I have good system voltage on the coil pack

I have good ground ohms

My signal wire is not shorted high or low

When I take V and ohm readings on the coil pack connection, either with the ign on or off they are all in line with the other sensors. So I don't think I have a wire issue.

The PO had the ECU replaced at a local dealer. I looked at the old ECU and it appears it had got wet at one point.

Im wondering if the same thing hasn't happened to the new one. however after they replaced the ECU they gave him the car back still broken. So it never ran even with the new ECU.

1 Where is the ECU?

2 What tells the ECU to fire the coil packs at the right time?

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The coil, spark plug wires and plugs were all replaced, but I am still getting a misfire. The idle is very rough so I've heard that it could be a bad fuel injector or faulty ground (though with the new components the other three cylinders sound cherry). The next step would be to purchase a "noid" test light and determine if the electronics to the injector are bad. I've also read that it could be a vacuum problem. There is a smell of unburned fuel when the engine is running.

How was it repaired? I'm quite good with the mechanical parts but lack the diagnostic tools, vacuum testers, multimeter and other such devices for performing complete screenings of the vehicle. Also, I can't drive it out to the local auto parts store to read the new error codes anymore. Finally I've got a "Chilton's" for the car but if there is a better manual available (better pictures, more descriptive instructions).

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Golf IV / Jetta IV :: Cylinder 2 And 3 Misfire - Code P0411

Alright so my car is popping up 4 codes.

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P0300 - Random/Multiple Cylinder Misfire Detected

P0302 - Cylinder 2 Misfire Detected

P0303 - Cylinder 3 Misfire Detected

Vehicle: 1999.5 VW Jetta MK4 2.0L GLS (AEG)

The P0411 code I have had for a while now and I been lacking to fix it. I pretty sure I can get this fixed but it doesn't cause problems so I haven't paid to much attention to it. Anyways, the other day I noticed a puddle of coolant under my car so after checking it out, the water pump was leaking so I bought a new one and replaced the old one. However, during the replacement process I had to remove the timing belt and I accidentally turned the top pulley about 1 notch and didn't notice at the time. After putting everything back on, I turned my car on and the engine sound a bit weak so I ran for about 10 minutes around a couple blocks.

I instantly noticed that the car had no power and it took me a long time to speed up. When I got back, I plugged in my scanner and I only had the same P0411 code and nothing else. After carefully reviewing the camera I had recording during the water pump replacement, I notice I had turned the top pulley a bit so I went ahead and removed the timing belt, readjusted it, and it worked! I was excited that the car was working fine again. Soon after, I headed out to take a drive and noticed after 60MPH the car didn't have much power. The car still accelerates after 60MPH, but extremely slow. As soon as I arrived back home, I plugged in my scanner and that is where I seen the 4 codes. Now my question is what could have caused this? Could I have damaged something when I ran my car with the incorrect timing?

Things I have done so far:

-I checked to see if I left anything unplugged.
-I checked for any vacuum leaks
-I checked my oxygen sensors so see if I was running rich/lean

Things I will do after work today:

-Check the spark plugs
-Check spark plug cable for damage

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