INTRODUCTION
Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This article may be used for quick reference when you are familiar with proper adjustment procedures and only need a specification.
CAPACITIES
| CAUTION | When battery is disconnected, radio will go into anti-theft protection mode. Obtain radio anti-theft protection code from owner prior to servicing vehicle. |
| Application | Quantity |
|---|
| Crankcase (Includes Filter) (1) |
| A8 & S8 |
| 4.2L | 8.0 Qts. (7.5L) |
| TT |
| 1.8L Turbo | 4.8 Qts. (4.5L) |
| Cooling System (Includes Heater) (2) |
| A8 & S8 |
| 4.2L | 11.6 Qts. (11.0L) |
| TT |
| 1.8L Turbo | 7.4 Qts. (7.0L) |
| Automatic Transmission |
| Initial Fill |
| A8 (01L - AWD) (3) | 10.4 Qts. (9.8L) |
| TT (09G - FWD) (3) | 7.4 Qts. (7.0L) |
| Fluid Change |
| A8 (01L - AWD) (3) | 3.7-4.2 Qts. (3.5-4.0L) |
| TT (09G - FWD) | (4) |
| Final Drive (Differential) |
| Front Differential |
| Initial Fill |
| A8 (01L - AWD) (3) | 1.4 Qt. (1.3L) |
| TT (09G - FWD) (3) | 1.05 Qt. (1.0L) |
| Fluid Change (4) |
| Center Differential (SAE 75W-90 Synthetic Oil) |
| Initial Fill |
| A8 (01L - AWD) (3) | .93 Qt. (.88L) |
| Fluid Change (4) |
| Rear Differential |
| Initial Fill |
| A8 (01L - AWD) (3) | 1.6 Qts. (1.5L) |
| TT (09G - AWD) (3) | 2.75 Qts. (2.6L) |
| TT (02M - AWD) (3) | 1.05 Qts. (1.0L) |
| Fluid Change (4) |
| Manual Transmission |
| TT |
| Initial Fill |
| 02J (5 Spd - FWD) (3) | 2.10 Qts. (2.0L) |
| 02M (5 & 6 Spd - AWD) (3) | 2.75 Qts. (2.6L) |
| Haldex Clutch Unit (5) |
| Initial Fill | 14.2 ozs. (.42L) |
| Fluid Change | 8.5 ozs. (.25L) |
| (1) To prevent overfilling, add approximately 1/2 qt. less than capacity. Start engine. Run until operating temperature is reached. Turn ignition off. Wait about 3 minutes. Check oil level. Fill to FULL mark on dipstick. Additional oil may be more or less than 1/2 quart. (2) Only use coolant G 12, meeting specification TL VW 774 D. Identifiable by Red color. (3) Use SAE 75W-90 synthetic oil. (4) Fluid change is not recommended by manufacturer. (5) Use high performance oil for Haldex coupling part No. G 052 175 A1. |
| (1) | To prevent overfilling, add approximately 1/2 qt. less than capacity. Start engine. Run until operating temperature is reached. Turn ignition off. Wait about 3 minutes. Check oil level. Fill to FULL mark on dipstick. Additional oil may be more or less than 1/2 quart. |
| (2) | Only use coolant G 12, meeting specification TL VW 774 D. Identifiable by Red color. |
| (3) | Use SAE 75W-90 synthetic oil. |
| (4) | Fluid change is not recommended by manufacturer. |
| (5) | Use high performance oil for Haldex coupling part No. G 052 175 A1. |
SERVICE INTERVALS & SPECIFICATIONS
| Component (1) | Miles (Km) |
|---|
| Accessory Drive Belt |
| 1.8L Turbo (TT) | 96,300 (155,000) |
| 2.7L BiTurbo | 74,500 (120,000) |
| 3.0L | 96,300 (155,000) |
| 4.2L | 74,500 (120,000) |
| Air Filter (All Models) | 37,500 (60,000) |
| Automatic Transmission Fluid |
| Normal Service | (2) |
| Severe Service | (3) |
| Brake Fluid | Every 2 Years |
| Dust & Pollen Filter (All Models) | 18,600 (30,000) |
| Haldex Clutch Oil & Filter (TT) | 18,600 (30,000) |
| Timing Belt (All Models) (4) | 96,300 (155,000) |
| Coolant | (5) |
| Fuel Filter | (6) |
| Oil & Filter | 6200 (10,000) |
| Spark Plugs | 37,200 (60,000) |
| (1) See FLUID CAPACITIES table for fluid type. (2) Check fluid every 15,000 miles. (3) Replace fluid every 30,000 miles. (4) On 2.7 BiTurbo replace idler pulley and tensioner each time timing belt is replaced. (5) Coolant system is permanently filled. If necessary to add coolant, only use coolant G 12, meeting specification TL VW 774 D. Identifiable by Red color. (6) Information is not available. |
| (2) | Check fluid every 15,000 miles. |
| (3) | Replace fluid every 30,000 miles. |
| (4) | On 2.7 BiTurbo replace idler pulley and tensioner each time timing belt is replaced. |
| (5) | Coolant system is permanently filled. If necessary to add coolant, only use coolant G 12, meeting specification TL VW 774 D. Identifiable by Red color. |
| (6) | Information is not available. |
ACCESSORY DRIVE BELT INSPECTION
Removing and installing accessory drive belt is an in-depth procedure. Visually inspect accessory drive belt while installed on engine. Ensure belt has no splits, cracks or other damage. If necessary to remove and replace accessory drive belt, see ACCESSORY DRIVE BELTS article in ENGINES.
Accessory drive belt is adjusted automatically by self adjusting tensioner.
ENGINE COMPRESSION
| Application | Specification |
|---|
| Compression Pressure |
| 1.8L Turbo (TT) |
| Normal | 145- 189 psi (10.0-13.0 bar) |
| Minimum | 102 psi (7.0 bar) |
| Maximum Variation Between Cylinders | 44 psi (3.0 bar) |
| 2.7L Turbo |
| Normal | 131-189 psi (9.0-13.0 bar) |
| Minimum | 102 psi (7.0 bar) |
| Maximum Variation Between Cylinders | 44 psi (3.0 bar) |
| 3.0L |
| Normal | 145-203 psi (10.0-14.0 bar) |
| Minimum | 109 psi (7.5 bar) |
| Maximum Variation Between Cylinders | 44 psi (3.0 bar) |
| 4.2L |
| Normal | 145-217 psi (10.0-15.0 bar) |
| Minimum | 109 psi (7.5 bar) |
| Maximum Variation Between Cylinders | 44 psi (3.0 bar) |
| (1) When checking compression, ensure engine oil temperature is not less than 86°F (30°C). Throttle valve should be fully open during compression check. |
| (1) | When checking compression, ensure engine oil temperature is not less than 86°F (30°C). Throttle valve should be fully open during compression check. |
ENGINE COMPRESSION SPECIFICATIONS (1)
VALVE CLEARANCE
Note. All models are equipped with hydraulic lifters. No adjustments are required.
IGNITION COIL(S)
Note. Information on ignition coil resistance was not available from manufacturer.
HIGH TENSION WIRE RESISTANCE
| Component | Ohms |
|---|
| 2.7L |
| Spark Plug Connector | 2000 |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
Note. On all models, torque spark plugs to 22 ft. lbs. (30 N.m). Information on spark plug type or gap was not available from manufacturer.
FIRING ORDER
Note. For firing order, refer to appropriate illustration.
Scheme 1
Scheme 2
Scheme 3
Scheme 4
IGNITION TIMING
Note. Idle speed, ignition timing and ignition timing advance are controlled by the ECM and are not adjustable.
FUEL PUMP
| Application | Specification |
|---|
| System Pressure |
| With Engine Idling (1) | 44 psi (3.0 bar) |
| With Engine Idling (2) | 36 psi (2.5 bar) |
| Residual Pressure (3) | 22-36 psi (1.5 bar) |
| Min. Vol. In 30 Sec. |
| Engine Code AMU | 5.6-6.2 ozs. (165-183 ml.) |
| Engine Codes ATC & AWP | 4.5-5.3 ozs. (133-157 ml.) |
| (1) With fuel pressure regulator vacuum hose disconnected. (2) With fuel pressure regulator vacuum hose connected. (3) After 10 minutes. |
| (1) | With fuel pressure regulator vacuum hose disconnected. |
| (2) | With fuel pressure regulator vacuum hose connected. |
FUEL PUMP PERFORMANCE (1.8L - TT)
| Application | Specification |
|---|
| System Pressure |
| With Engine Idling (1) | 46-55 psi (3.2-3.8 bar) |
| With Engine Idling (2) | 55-61 psi (3.8-4.2 bar) |
| Residual Pressure |
| Cold Engine (3) | 32 psi (2.2 bar) |
| Warm Engine (3) | 44 psi (3.0 bar) |
| Min. Vol. In 30 Sec. | 3.0-4.2 ozs. (90-125 ml.) |
| (1) With fuel pressure regulator vacuum hose connected. (2) With fuel pressure regulator vacuum hose disconnected. (3) After 10 minutes. |
| (1) | With fuel pressure regulator vacuum hose connected. |
| (2) | With fuel pressure regulator vacuum hose disconnected. |
FUEL PUMP PERFORMANCE (3.0L)
| Application | Specification |
|---|
| System Pressure |
| With Engine Idling (1) | 50 psi (3.5 bar) |
| With Engine Idling (2) | 58 psi (4.0 bar) |
| Residual Pressure (3) | 36 psi (2.5 bar) |
| Min. Vol. In 30 Sec. | 3.2-3.9 ozs. (95-115 ml.) |
| (1) With fuel pressure regulator vacuum hose connected. (2) With fuel pressure regulator vacuum hose disconnected. (3) After 10 minutes. |
| (1) | With fuel pressure regulator vacuum hose connected. |
| (2) | With fuel pressure regulator vacuum hose disconnected. |
FUEL PUMP PERFORMANCE (4.2L)
FUEL INJECTOR RESISTANCE
| Application (1) | Ohms |
|---|
| 1.8L | (2) 12-13 |
| 2.7L & 3.0L | (2) 13.5-15.5 |
| 4.2L | (2) 13-16 |
| (1) Measured at room temperature. (2) Add 4-6 ohms if fuel injector is at operating temperature. |
| (1) | Measured at room temperature. |
| (2) | Add 4-6 ohms if fuel injector is at operating temperature. |
IDLE SPEED & MIXTURE
Note. Idle speed and air mixture is controlled by the ECM and are not adjustable. When engine is idling the ECM tries constantly to adjust actual engine speed so that it matches specified value. This means that the actual engine speed when idling should always be approximately the same as the specified engine speed.
THROTTLE POSITION SENSOR
Note. Throttle Position (TP) sensor is integral to Throttle Valve Control Module (TVCM) and is not adjustable. For testing procedures, see TVCM related testing procedure in SELF-DIAGNOSTICS or SYSTEM & COMPONENT TESTING article.
