740 L4-2.3L SOHC VIN 88 B230F (1985)
Air/Fuel Mixture: Adjustments
CO% Adjustment Using Volvo Mono-Tester
CO-Adjustment Using Mono-Tester
Connecting Mono-Tester
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Connect Battery (+) and (-) posts
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Connect HT wire for No. 1 cylinder
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Connect Ignition setting sensor/stroboscope
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Connect CO test point (green-white wire).
Check/Adjust Idle Speed
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Warm-up engine
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Run engine at 1500 rpm.
NOTE: Warm-up engine until radiator thermostat opens.
Fig. 326 IDLE SPEED TEST CONNECTOR
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Ground red-white wire to close idle air control valve.
NOTE: Switch off AC as applicable.
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Check idle speed.
