High idling speed accompanied by oil leaks, lack of power and fault codes on VAG 2.0 TFSI vehicles (post nr 17-006)

AFFECTED MODELS

On some models from the VAG manufacturer with 2.0 TFSI (Turbocharged Fuel Stratified Injection) engine, with BWA, BPY and BYD engine management, it is likely that the following fault will be found:

Firstly, after repeated incidents, a list of recorded fault codes became evident in the engine control unit that could occur: 

P0507 – Idle control fault.

P2279 – Leak in the air intake system.

• In this fault, constant oil leaks are identified at the rear of the engine and in the spark plug locations. It is possible that fuel may be found in the spark plug area due to a loosening of the cylinder head bolts as a result of excessive pressure in the lubrication circuit.
• The valve intended to retain the crankcase vapours (PCV), that is joined to the cylinder head cover does not function correctly, specifically the internal membrane of the non-return valve. This PCV internal fault allows the turbo pressure to enter the oil vapour circuit.
• The model of the crankcase oil vapour purge valve must be checked and the metal hose doser that runs from the turbocharger to the intake manifold. There are specific spares for these two parts to solve this fault.

A- Old model 

B- Modified model

Section affected of the hose that runs from the turbo to the intake manifold.

A- Old model

B- Modified model

C- Visual differences

View of the affected PCV modules.

 To correctly repair the fault, take the following steps:

1 - First, check for the existence of oil leaks at the rear of the engine as indicated at the beginning of this newsletter.

2 - Check the existence of fuel or oil from the engine's lubrication circuit in the spark plug area.

3 - Check the condition of the cylinder head bolts and retighten them to 10 Nm if necessary.

4 - Check the PCV model.

5 - Check the doser of the hose joined to the turbo and the intake manifold.

6 - Replace the affected turbo's metal hose and the PCV valve with the modified version with the appropriate part reference for each model:

Part references of the old model of the affected PCV:

·                     For all models: 06F129101E, 06F129101F, 06F129101K, 06F129101L, 06F129101N.

·                     The reference of the modified PCV model: 06F129101P.

Part references of the old model of the affected turbo hose:

·                      For all models: 06F103215A, 06F103213N, 06D103215A, 06D103213G.

·                      The part reference of the modified turbo hose model: 06F103215B or 06D103215A.

Note: The tightening of the new crankcase vapour recirculation valve (PCV) should be 4 Nm, and the coupling of the new hose to the turbo should be 9 Nm.

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VW - Skoda - Audi : Noise in gearbox after engaging 5th gear (post nr 17-005)

This post discusses a fault that causes a noise in the area of the vehicle's gearbox when driving on the road, until eventually the 5th gear cannot be engaged.

Affected models 

The engines motors that could be affected are the following:
VW GOLF V
AUDI A3
SKODA OCTAVIA

Symptoms 

Noises in the gear shifting area when driving the vehicle, regardless of the speed at which it is driven.
Problems engaging 5th speed.
Gearbox oil leak

Procedure and solution 

After taking the vehicle for a test drive, check the oil level in the gearbox.

Once it is checked that the level of the gearbox is correct, start to remove it. Remove the gearbox and check the following:

The 5th gear locking ring has jumped from its housing, causing the whole drive assembly, along with the moveable mechanism for 5th gear, to be out of its working position.

Cause of failure 

* Breakage of the 5th gear lock ring assembly.
* Causes a hole in the cover with loss of 5th gear components.

Solution 

1. If the gearbox has been in use for many kilometres with a perforated cover there may be seizures inside and damage in the internal mechanisms caused by aluminium particles etc. In these cases the gearbox must be replaced.

Solution 

1. If the gearbox has been in use for many kilometres with a perforated cover there may be seizures inside and damage in the internal mechanisms caused by aluminium particles etc. In these cases the gearbox must be replaced.

2.-If the customer has stopped the vehicle after first hearing the noise, the 5th gear does not provide traction and there is an oil leak, this can be repaired (replace cover, rubber gasket and any damage observed in the workshop)

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Climate control malfunction (PEUGEOT 307 1.4 16V (ET3J4 (KFU)) 2003 - 2008) (post nr 17-004)

Symptom

• The climate control is inoperative on one or both sides

Cause

• Damaged gearwheel teeth, left or right air flap

Left side or right side

Solutions

• Remove the glovebox

• Remove the air flap actuator

• Remove the gearwheel

• Use a screwdriver

• Check the clips before refitting

Note: Check the alignment

• Refit the gearwheel

• Turn the gearwheel anti-clockwise to its stop

(b)

Fit the replacement gearwheel over the existing

gearwheel

Parts required

Air flap modification kit: (OE: 6450XZ)

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