I am trying to get a better understanding of how the smog pump system works on my Suburban. 1895, K20, Suburban, 350ci, th400, 4bbl Quadrajet without the mixture solenoid, without an O2 sensor, a HEI distributor without ESC.
I found this helpful information but I want to know more.
http://forum.73-87chevytrucks.com/smforum/index.php?topic=23203.0 I have a temperature sender on top the thermostat housing. I do not know what it does. It does not connect to the water temperature gauge. The green wire #37 is connected to the gauge.
Where is the air temperature switch?
I passed emissions with great numbers and I do not have catalytic converters in the exhaust system. (29 ppm HC, 0.14% CO) loaded (82ppm HC, 0.21% CO) Idle.
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