engine coolant AUDI A4 1998 B5 / 1.G AFC Engine Assembly Workshop Manual

10-5

- Remove intake air duct to air cleaner at air
scoop and lift out.

- Disconnect harness connectors for headlights and turn signal lights.
- Disconnect harness connector of engine coolant temperature sensor
near bottom coolant hose at left of radiator.

- Disconnect four harness connectors at ABS hydraulic unit.
- Disconnect harness connectors for anti-theft warning system at upper
left of front end.
- Disconnect coolant hose at top left of engine.
- Unclip and disconnect A/C clutch harness connectors at radiator air
guide on lower right.
- Disconnect harness connectors at both horns, let cables hang free.
- Remove air scoop.
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10-6

- Disconnect harness connectors at Mass Air
Flow (MAF) sensor and Idle Air Control (IAC)
valve, unbolt hose from plenum chamber and
unclip.

- Disconnect hose connection at IAC valve.

- Remove air guide between air cleaner and
throttle body.

- Remove air cleaner housing.

- Disconnect fuel supply and return lines.

- Remove coolant expansion tank.

- Remove cover for electronics box.
- Unclip engine control module and disconnect harness connectors.
- Disconnect harness connectors at connector station below engine
control module.
- Disconnect ground connection and bracket for harness connectors at
plenum chamber.
- Disconnect both coolant lines to heater core between plenum chamber
and engine.
- Disconnect accelerator pedal cable and let hang free.
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10-12

- Allow stop of torque support to move down onto
rubber block under its own weight; tighten bolts
to 45 Nm (33 ft lb).

- Align exhaust system free of stress Repair
Group 26.
- Adjust accelerator pedal cable Repair Group
20.
- Re-fill engine cooling system Repair Group
19.
- Drained coolant may only be re-used provided
the cylinder block or the cylinder head was not
replaced.

- Check oil level before starting engine.

- Short blocks are supplied without bushing in
crankshaft. For vehicles with automatic
transmission, tap bushing into place before
installing drive plate.

- Check reconditioned engines with manual
gearbox to determine whether needle bearing is
installed in crankshaft; install if necessary.
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