Taurus V6-182 3.0L DOHC SHO (1992)
Electrical Vacuum Control Valve Switch
1.
With cold engine, vacuum applied to Port A (center port) should leak from Port C (upper port).
Vacuum should NOT leak from Port B, if Port C is plugged with finger.
2.
Measure the resistance between the the electrical terminals.
3.
With warm engine, vacuum applied to Port A (center port) should leak from Port B (lower port).
Vacuum should NOT leak from Port C, if Port B is plugged with finger.
4.
Measure the resistance between the the electrical terminals.
NOTE: The 3-Port Electrical Vacuum Switch could be opened or closed on a cold engine. After the engine warms up to operating temperature,
the valve will be in the reversed position (closed or opened).
