A4 Sedan L4-1.8L Turbo (AWM) (2001)
Idle Speed: Testing and Inspection
Idle Speed (RPM), Checking
Special Tools and Equipment
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VAS5051 with VAG5051/1
Test requirements:
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Exhaust system free of leaks.
Coolant Temperature at least 80 °C.
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Electrical consumers switched off (radiator fan must NOT run during test).
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A/C switched off.
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No pressure gauge connected.
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Vehicles with automatic transmission Selector lever in P or N.
NOTE:
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Idle speed cannot be adjusted.
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Idle speed is checked during basic setting of the engine.
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During basic setting, the Evaporative Emission (EVAP) canister purge regulator valve (EVAP valve -N80-) is closed and the A/C compressor is
switched off
Test sequence
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Check DTC memory. There must not be any DTCs stored, repair malfunctions if necessary, erase DTC memory, switch engine off and start again,
road test vehicle and check DTC memory again as a control measure.
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Let engine continue to run at idle.
WARNING!
The electric fan for the radiator must not be running.