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It should be underneath the throttle body on the back of the intake manifold

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Q: Where is egr valve 2003 Mazda Protege?
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The egr position sensor is made into the egr valve. Look for the egr valve and you will find a plug with wires plugged into the egr valve. These wires are for the position sensor and they go back to the ecm ( engine control monitor)< computer> James= 15 year Mazda tech just a tip= with engine COLD,reach under valve and press on plunger and see if it moves freely(not easy) but freely. Hope this helps.


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