5000S Sedan L5-2226cc 2.22L SOHC (KZ) (1985)
Idle Up Control Valve: Adjustments
IDLE STABILIZATION, ADJUSTING
Requirements:
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engine cold
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A/C switched OFF
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all other electrical consumers switched OFF
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attach multimeter US 1119, using VW 1315A/2 adaptor to idle stabilization valve, switch to 2A scale
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switch ON ignition
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945 - 1055 mA
IF NO
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replace control unit
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start engine and warm up to 80°C (176°F) oil temperature, with A/C switched OFF
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idle stabilizer mA value should be: 430 ± 20 mA
NOTE: If readings are 480 ± 25 milli-amps with auto transmission or 490 ± 25 milli-amps with manual transmission, check for wire break
between control unit and ignition coil terminal 1.
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specification with A/C ON automatic transmission 500 ± 20 milli-amps
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specification with A/C ON manual transmission 490 ± 20 milli-amps
IF NO
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adjust throttle by-pass screw (arrow) until 430 ± 20 mA is obtained
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check idle speed 800 ± 70 RPM