Engine won't run Chapter 2
 

1977 - 911S Targa Thanks to Doug I have narrowed the problem down to the air sensor plate switch. The switch is not opening when the sensor plate moves up. There is a spring mounted inside the air box directly below the center of the sensor plate. There is a small screw that has a slot on the bottom which looks like it would adjust the flat spring movement. Is this the switch that I am looking for and if so which way should I turn the screw. Hope there is more help out there. I have had it running by putting a jumper across the relay contacts but this is not a good way to operate. By the way I have checked the relay and it is working properly.