Where Is the EGR Valve for the 1999 Mazda Protege?
The emission gas recirculation valve is one of the many pieces that make up your 1999 Mazda Protege's emission system. Without the EGR valve, your Protege will not pass most state inspections.
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Location
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The EGR valve is located under the throttle body of your 1999 Mazda Protege. Access the valve by removing the air hose from the air box and reaching under the throttle body.
Purpose
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The EGR valve is part of the emissions system. The valve recirculates small amounts of exhaust to increase the combustion efficiency of the engine and reduce pollutant output.
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Problem Signs
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You may have a problem with your EGR valve if your engine idles roughly or the check engine light comes on. Plug a diagnostic computer into your Protege's computer to determine if the EGR is the problem.
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