No installation work is needed on our Vectra with Variable Catalytic Converter. there is nothing to adjust here. This work is performed by the lambda probe and, accordingly, the ignition/injection control unit Checking the idle speed (770-930 rpm for a 16V 1.6L engine and 670-1030 rpm for a 16V 1.8 / 2.0L engine) or CO content (maximum 0.3 vol. % at 2800-3200 rpm without load) made only in exceptional cases. If specifications are not obtained, check air hoses, vacuum hoses, exhaust gas recirculation and activated charcoal tank system.
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