LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercury >> 1987 >> Cougar XR7 >> Repair and Diagnosis >> Engine Performance >> System >> EGR System >> Operation >> Ported Vacuum Switch
September 30: LEMON manuals is back up on a temporary server! Slowness is possible

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.

scientia non olet · About LEMON Manuals