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Home >> Ford >> 1987 >> Mustang LX, 2D Convertible, 2.3 A, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EGR System >> Operation >> Ported Vacuum Switch
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Ported Vacuum Switch

The ported vacuum switch is used to hold off EGR operation to provide better cold engine driveability. This switch is temperature actuated which changes vacuum routing when coolant temperature changes.

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