Uncategorised

1. 8FS and 8FR engine codes. The engine cooling fan motor runs continuously, with an engine code P11AA showing. This is a manufacturer specific code, so it’s not always easy to identify what the code refers to. The problem tends to relate to air leaks on the intake manifold or splits in the vacuum pipes going to the manifold. To fix, either replace the vacuum pipes or repair the leaks themselves.

1. The central locking can be a problem, with the locking either not operating correctly or not at all. The cause tends to be the result of corroded wiring between the door lock mechanism and the door multi-plug that’s housed in the vehicles A-pillar. To fix, the corroded wiring needs to be repaired.

The updated 2007 Peugeot 308 introduced a selection of new PSA Group engines, the most popular of which were 1.6- and 2.0-litre HDi turbo-diesels and 1.6-litre VTi petrol engines.  Castrol points out that every engine in the current generation Peugoet 308 was designed to run on fully-synthetic, low viscosity 5W-30 engine oil.

It’s important that vehicle technicians top-up these vehicles with the correct oil formulation.  Anything other than the recommended fully-synthetic 5W-30 C2 formulation will not have the relevant PSA Peugeot Citroen B71 2290 approval (including higher viscosity oils, such as 10W-40), thereby invalidating the manufacturer warranty, and may reduce the efficiency, performance and longevity of the engine.

Both factors and workshops can benefit from the systems that TecDoc and sister company AuDaCon can provide those that need to correctly identify and supply replacement parts and those actually undertaking repair or service work.

The examples below are common faults that occur on various versions of the Audi A4 and which have been sourced using the AuDaCon system in conjunction with its SOS service recall option. Not only does it identify likely faults, it also points the technician in the right direction in those instances where the most obvious solution may in fact be the wrong one.

AUDI A4 (8K2, B8) 1.8 TFSI – Battery Faults

Example 1

From the RMI's Technical Helpdesk:

-Brake fluid change, small content but a regular omitted add on during service at 24000miles (dependant on model).

-Front suspension lower arms, dry squeaking joints, squeaking steering.

-These vehicles are subject to handbrake/rear caliper issues, also check for seized cables due to water ingress.

-Pollen/cabin filter housings crack and let water into the passenger area under the floor mats, when replacing the filter ensure the housing is in one piece. Again a small content repair but often omitted during service.

1. Thinking beyond – corrosion-resistant screw for Audi-multi-link axles

(e.g. included in MEYLE kit 116 050 0165/HD)

Problem:

Steering and suspension assemblies are vital components on the modern motor vehicle. These parts are safety critical and contribute to the effective and economical running of the vehicle.

One of the more common problems that the Audi A4 experiences are the premature failure of the bushes in the multi-link suspension arms. Because the arms are aluminium due to the Audi weight saving programme, it is recommended to replace the complete arm.

Exol Lubricants has launched Optima LSV 5W-30, a new generation fully-synthetic engine oil, which is approved by Volkswagen Audi Group (VAG).

The super multi-grade engine oil is formulated using the latest developments in synthetic technology and this, coupled with the most up to date advancements in additive chemistry, is designed to set new standards in engine oil performance over extended oil drain intervals.

In addition to outstanding performance at high and low temperatures, Optima LSV 5W-30 includes Exol’s low SAPS (sulphated ash, phosphorus, and sulphur) additive technology to ensure effective emission and pollution control, thereby minimising environmental damage.

Developments in vehicle manufacturing led to the use of nano technology in Corteco's Torsional Vibration Dampers for Audi A4 applications, says the supplier.

The tighter emissions regulations governing the design of today's vehicles, means that they are lighter with more powerful, more compact engines. A consequence is that these engines operate at higher temperatures that create a hostile environment for the materials used on components inside the engine compartment.

Current Audi A4 2L engines runs at around 20 deg C higher than previous models. Under such conditions, the use of standard natural rubber compounds on components inside the drive system is inappropriate. It is subject to compromise and premature failure.

1.       Engine Oil

1.8 & 2.0 TFSi Petrol Engine

• The engine can sometimes be difficult to start. An engine light will appear with a ‘camshaft shaft position bank 1’ fault description. This will be caused by a failure of the non-return valve and filter basket on the end of the camshaft (front), leading to score marks and the partial seizure of the cam shaft. As a result the valve timing jumps, which results in the engine start problems.

2.0 TDi Diesel Engine

• The Piezo Injectors are a frequent issue. Solenoid shorts to earth on the injectors. In this instance the injectors should be replaced. This applies to the 170ps engine only.