I don't know what makes the signal switch but it isn't switching. I had a friend start the car when cold and I have checked the wires for voltage and it doesn't switch the voltage from the bottom to the top ever. The voltage stays on the bottom 2 all the time which keeps the valve closed. I would guess that whatever switches it is bad but I don't know what are where that is!!!
The good thing is it really doesn't matter in warm weather and it is warm here in KY where I live now. Only in cold weather on first startup in the morning is when it causes a problem.
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