E46 328 auto gearbox solenoid valve
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  1. #1
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    auto gearbox solenoid valve

    hi can any tell me wat they actually do and wat would happen if they start to play up?
    simon

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    The ECU controls valve body solenoids to direct the flow of oil in the clutch packs for shifting gears. From this info, you can probably figure out what happens when they go wrong . Also, there are main and converter lock up pressure regulators to consider when diagnosing a step box

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