Hot steam can escape from the expansion tank when the filler cap is opened. Cover the filler cap with a cloth and unscrew it carefully. Note: When the engine is hot the cooling system is under pressure. Carefully open filler cap on expansion tank to release pressure before starting repair work. Hoses are secured with spring-type clips. When repairing only use spring-type clips. VAG 1921 pliers are recommended when installing spring-type clips. The O-rings installed at the quick-release connections must be replaced if damaged or leaking. When installing coolant hoses, make sure that they are free of stress and do not come into contact with other components (observe markings on coolant connection and hose). Perform leak test on cooling system with cooling system tester VAG 1274 and adapter VAG 1274/8.
Cooling system components (on body), removing and installing
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The engine control unit has a self-diagnosis capability. Before carrying out repairs and fault finding the fault memory must be interrogated. The vacuum hoses and connections must also be checked (unmetered air).
- Fuel hoses in engine compartment must only be secured with spring-type clips. Clamping-type or screw-type clips must not be used.
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1990-1993 Wiring Chart Circuit LG/W GY/W R/W R/Y P/W LB R/Y GY BK/LB, PK/LG BK/Y T/Y Not Used LB/R BK Circuit Function Left Turn Indicator Hi Beam Indicator Coolant Temperature Sender Feed 12V Input1 Check Brake Indicator Feed Low Coolant Indicator Feed 12V Input1 Check Oil Indicator Feed Malfunction Indicator Lamp (MIL) Feed Air Bag Indicator Tachometer Feed Not Used Illumination Feed Ground Pin Number Circuit Not Used R/LG Not Used Not Used Not Used Not Used R/Y W/R BK Y/W LB/R W/LB DG/LG LG/R Circuit Function Not Used Ignition Switch Not Used Not Used Not Used Not Used 12V Input1 Oil Pressure Gauge Feed Ground Fuel Gauge Feed Illumination Feed Right Turn Indicator Fasten Belts Indicator Battery Indicator Feed
Match to same colors as the 1987-1989 harness.
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The new Audi A6 – the most progressive vehicle takes the lead Design and performance are the main driving elements on its way to the top position. Furthermore, the new Audi A6 embodies the consequent continuation of the familiar Audi brand values, sports appeal, progressiveness and intrinsic quality, which are evident in the fourth generation of this sporty business limousine.
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Covers Audi A4 models builtontheAudi “B5″ platform. Doesnot include AudiS4(sports model). This manual has been prepared using selected factory service information with the added benefit of suggestions tips and clarification of various procedures. Bentley repair manuals provide clear andcomprehensive service and repair procedures.
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The installation of AWE Cold Cone Box for Volksgagen Mk5, CC and Audi A3, TT vehicles:
Step 1: On 2006-08 FSI engines, remove the entire engine cover assembly and inlet ducting. Leave the duct that bolts to the radiator support in place. Remove the MAF sensor from the engine cover assembly. On 2008.5-> TSI engines, remove the factory airbox, intake tubing, and MAF sensor housing. Leave the duct that bolts to the radiator support in place. Remove the MAF sensor from the sensor housing.
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AIM has developed special applications for many of the most common ECUs: by special applications we mean user-friendly systems which allow to easily connect your ECU to our high tech data loggers: user needs only to install harness between the logger and the ECU. Once connected, the logger displays (and/or records, depending on the logger and on the ECU data stream) values like RPM, engine load, throttle position (TPS), air and water temperatures, battery voltage, speed, gear, lambda value (air/fuel ratio) analog channels…
All AIM loggers include – free of charge – Race Studio 2 software, a powerful tool to configure the system and analyze recorded data on your PC.
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Borla Performance Cat-Back ™ Exhaust System Installation
1. Place a clamp over the expanded end of the front muffler assembly and set it into position as shown in figure 4 making sure to install the hangers into the rubber isolators. Do Not tighten the clamp.
2. Place a clamp over the expanded end of the rear muffler assembly and set it into position as shown in figure 5. Do Not tighten the clamps.
3. Check your exhaust system for proper clearance under the vehicle and also for tip alignment.
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Common Problems
1. I am having trouble connecting with an ‘02 Audi A4.
This vehicle does pose connection issues with most aftermarket tools. Please continue to retry the connection.
2. I am having trouble getting good data rates on a specific controller.
Audi/VW consolidated sensors into groups. Some sensor groups can update at slower rates then others. Typically, this is text-based sensors on non-critical models like Telephone or Climate control. To resolve this select only those sensors that are important to you until you reach a saturation point for the data throughput.
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Powerchip technology enhances your Audi to its ultimate level, delivering faster, smoother acceleration in all driving conditions. Whether you enjoy a leisurely weekend cruise or a hard racetrack drive – there is no easier and more effective way to release the potential from your S4 4.2 V8.

The following information is an overview of the performance the Powerchip will deliver. If you have any questions, your Power Consultant will assist you as best as possible. We look forward to giving you the best performance possible from your Audi.
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