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To replace the EGR sensor in a Mazda MX-3, start by disconnecting the negative battery cable for safety. Remove the EGR valve by unbolting it from the intake manifold, and then disconnect the electrical connector from the sensor. Replace the old sensor with the new one, reconnect the electrical connector, and reattach the EGR valve. Finally, reconnect the battery and start the engine to ensure proper function.

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6d ago

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