I just aquired an intake manifold with the AB valve still intact, My question is, does it operate without the smog pump? It has no large air connections just the small 1/8 inch tubing.

Best,

H Houghton

searching the site found schematic, apparently this is not the ab valve.:stupid:

But what the heck is it for? I am at my office and cant check my parts CD

Without pictures, can't say for certain. But I think you are talking about the throttle-close-delay mechanism. If so, it could work without the air pump, but I find its operation annoying.