July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Distributor Thermal Control Valve

Distributor Thermal Control Valve:

COLD--Engine Coolant Temperature Below 61° F
Vacuum should pass through the valve.

WARM--Engine Coolant Temperature Above 76° F
Passage of vacuum should be completely restricted.

NOTE: Refer to the number stamped on the base of the switch or valve for calibrated switching or activation temperatures.