The jiggle pin or check valve in a thermostat helps bypass coolant as the temperature rises.

Name: The jiggle pin or check valve in a thermostat helps bypass coolant as the temperature rises.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The jiggle pin or check valve in a thermostat allows a small amount of coolant to flow through the thermostat even when it is closed, which helps to prevent air pockets and ensures that the thermostat senses the coolant temperature accurately, rather than bypassing coolant as the temperature rises.

The Jiggle Pin or Check Valve in a Thermostat Helps