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231/232 Engine Code Saga 850

Thanks for taking the time to reply. Your advise is always a good read. Do you know how the EGR system is supposed to work? The exhaust manifold tube goes to a device on the intake manifold with a vacuum line attached. The vacuum line goes to another device mounted on top of the radiator that has an electrical connection and a second vacuum line going to the intake manifold. Do you know what electrical signal activates this device? Thanks....






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