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Home >> Audi >> 2006 >> A4 Quattro Cabriolet (8H7) V6-3.0L (BGN) >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Service and Repair >> Removal and Replacement >> Engine, Removing >> Part 1

Part 1






Engine, Removing

CAUTION!
Before beginning repairs on the electrical system:

• Obtain the anti-theft radio security code.

• Switch the ignition off.

• Disconnect the battery Ground (GND) cable.

• On vehicles equipped with Audi Telematics by OnStar, switch-off the emergency (back-up) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery.

• After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows according to Repair Information and/or Owner's Manual.

• After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar, switch-on the emergency (back-up) battery for the Telematic/Telephone Control Module.





Special tools, testers and auxiliary items required

• Engine Support Bridge (10-222A)

• Engine Sling (2024A)

• Engine Support Adapter (3147)

• Ribbed Belt Install. Tool (3299) with Claw For Tensioner (3299/1)

• Drip Tray For VAS6100 (VAS6208) or (V.A.G 1306)

• Engine/Transmission Jack (VAG1383A)





Special tools, testers and auxiliary items required

• Bracket (30-211A) for vehicles with automatic transmission 01V

• Old oil collecting and extracting device (V.A.G 1782 )

• Shop Crane -Load Cap=700-1200Kg (VAS6100)

• Support (T10062)

Special tools, testers and auxiliary items required

• Insert Pad For Front Fender (T40045) for vehicles with multitronic transmission 01J or automatic transmission 01V





Work procedure

• Engine is removed without transmission toward the front with the lock carrier removed.

• Heat insulation sleeves removed during engine removal should be reinstalled in the same location when installing engine.

• All cable ties opened or cut during engine removal must be reinstalled at the same locations during installation.

• Drained coolant must be stored in a clean container for disposal or reuse.

- Shift selector lever into position "N" on a vehicle with multitronic transmission 01J or automatic transmission 01V.

CAUTION!
Observe procedures when disconnecting battery.

- Pull off rubber seal of plenum chamber cover in direction of - arrow -.





- Remove plenum chamber cover - 1 - toward front.

- With ignition switched off, disconnect Battery Ground (GND) cable - arrow -.





CAUTION!
Cover cap of coolant expansion tank with rag and open carefully, as hot steam or hot coolant may escape when opening.

- Open cap of coolant expansion tank.

- Remove both front wheels.

- Remove front bumper cover.

- For vehicles with auxiliary heater, remove bolts - arrows - for exhaust pipe of parking heater/auxiliary heater on noise insulation.





- Loosen screws or quick-release fasteners - 1 - and - 2 - and remove front noise insulation.





- Remove quick-release fasteners - 3 - and remove rear noise insulation, if installed.

- Remove bracket for noise insulation - arrows -.





- Place Drip Tray For VAS6100 (VAS6208) under engine.

Vehicles with drain plug:

- Rotate drain plug - 2 - at cooler toward left and if necessary, position assisting hose on supports and allow coolant to drain.





Vehicles without drain plug:

- Remove securing clamps and remove Engine Coolant Temperature (ECT) Sensor (on Radiator) (G83) - 3 -.

- Remove Engine Coolant Temperature (ECT) Sensor (on Radiator) (G83) from supports and drain coolant.

All:

- Pull coolant hose retaining clip - 1 - off downward and disconnect coolant hose from radiator.

- Disconnect left coolant hose from radiator - arrow -.





- Also disconnect coolant hose from oil cooler - arrow - and let rest of coolant drain.





- Place old oil collecting and extracting device ( V.A.G 1782) underneath.

- Disconnect hydraulic lines to cooling coil at rear of bumper - arrows -.





Vehicles with 01J or 01V automatic transmissions





• Observe the rules of cleanliness for working on automatic transmissions.

- Place old oil collecting and extracting device ( V.A.G 1782) under connection.

- Remove union nuts - 3 - and disconnect ATF lines.

- Remove ATF line bracket and remove nuts - 1 - and - 2 -.

All:

- Remove cover - 1 - in engine compartment (right side).





- Remove the bolts - arrows -.





- Disengage Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) - 1 - from air duct.

- Remove the air duct - 2 -.

- Remove cover - 1 - in engine compartment (left side).





- Disconnect upper coolant hose - 1 - from radiator.





- Disconnect electrical harness connector - 2 - for left and right airbag sensors on lock carrier.

- Free up electrical wiring.

- Remove electrical harness connectors - 1 - and - 2 - from bracket.





- Disconnect electrical connectors and free up electrical lines.

- Disconnect electrical connector - arrow - for left and right headlights.





- Remove hood cable from lock carrier.

- Remove left and right air ducts from radiator - arrows -.





- Unclip the Outside Air Temperature Sensor (G17 ) - 2 - from the bracket.





- Remove bolts - 3 - and - 4 - and remove the power steering system cooling coil.

- Disconnect electrical harness connector - 1 - at High Pressure Sensor (G65).

CAUTION!
The air conditioning refrigerant circuit must not be opened.

- Remove the bolts - arrows - for the condenser.

• To prevent damage to the refrigerant lines/hoses, ensure that the lines and hoses are not stretched, kinked or bent.

- Pivot the condenser downward with lines connected.

- Remove screws - arrows - at left and right.





- Remove hood seal from lock carrier and from fender bolted flanges.

- Remove bolts - arrows - at left and right impact absorbers.





• A second technician is required to remove the lock carrier.

- Remove lock carrier and set aside so it cannot topple.

- Pull rear engine cover off - arrows -.





- Remove solenoid valve retaining plate - 3 - - arrows -.





- Disconnect air duct hose - 1 - at Mass Air Flow (MAF) Sensor (G70).

- Disconnect crankshaft housing ventilation hose - 4 - from air duct - 2 -.

- Remove screw - arrow - and remove air duct - 2 - from Throttle Valve Control Module (J338).





- If equipped, disconnect hose - 1 - from air duct.

• To improve clarity, shown from the rear with the engine removed.

- Disconnect coolant hoses - 1 - and - 2 -.





• Coolant hose - 3 - remains connected.

- Remove coolant expansion tank - arrow -.

- Disconnect the electrical line at Engine Coolant Level (ECL) Warning Switch (F66) at bottom of coolant expansion tank.

- Remove Ground (GND) connection - 2 -.





- Pull off the vacuum lines - 1 - and - 3 -.

- Disconnect vacuum line - arrow - to Leak Detection Pump (LDP) (V144) from Throttle Valve Control Module (J338).





Vehicles with 01J or 01V automatic transmissions





- Disconnect electrical harness connector - arrow - on Brake System Vacuum Pump (V192).

All:

- Extract hydraulic oil for power-steering from reservoir using old oil collecting and extracting device (V.A.G 1782).

- Disconnect hose - 1 - from power steering fluid reservoir.





- Disconnect vacuum hose - 2 - to vacuum reservoir.

- Disconnect electrical harness connector - bottom arrow - at Secondary Air Injection (AIR) Pump Motor (V101) and free up electrical wire.





- Disconnect hose from pipe to Secondary Air Injection combi-valve - top arrow -.

Vehicles with fuel return line:

CAUTION!
Fuel system is under pressure! Before opening system, place rags around the connection area. Then release pressure by carefully loosening the connection.

- Disconnect the fuel supply line - 1 - and the fuel return line - 2 -.





- Free up fuel lines.

Vehicles without fuel return line:

CAUTION!
Fuel system is under pressure! Before opening system, place rags around the connection area. Then release pressure by carefully loosening the connection.

- Unscrew fuel hose from connection on fuel rail pipe. To do so, counterhold using an open-end wrench at each hex head - 1 - and - 3 - and unscrew union nut - 2 -.





All:





- Disconnect the following lines and electrical connectors:

1. at Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)

2. Vacuum hose at Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)

3. at Mass Air Flow (MAF) Sensor (G70)

- Disconnect hose connections, free up electrical wires and remove air filter housing - arrows -.

• Place a rag under hydraulic pressure lines to catch escaping hydraulic fluid.





- Unscrew power steering hydraulic pressure line from rear coolant pipe - 1 - and disconnect line at height of right cylinder head - 2 -.

- Pry off cover caps - 3 - from wiper arms using a screwdriver.





- Loosen nuts - 4 - on both wiper arms a few turns.

- Loosen wiper arms - 2 - one after another from wiper axle by tilting slightly.

- Unscrew nuts completely and remove wiper arms.

- Disconnect securing clips - 1 - and remove cowl grille - 5 -.

Vehicles with 01J or 01V automatic transmissions

- Disconnect electrical harness connector - arrow - at Brake Booster Pressure Sensor (G294).





All:

- Remove cover for E-Box in plenum chamber - arrows -.





- Pry off retainer bar using a screwdriver - arrow -.





- Loosen connector catches - arrows - and disconnect control module electrical connectors - 1 - and - 2 -.





Vehicles with 01V automatic transmission:

- Disengage transmission control module retaining bracket.

- Disengage connector - arrow - and disconnect from transmission control module.




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