jlcz28

I'm trying to find out how much vacuum I should have I'm thinking 16-20 inch hg but I haven't found it in writing. My gauge is reading 19. I think something is hooked up wrong in the back by the map sensor. I have the large end of the plastic valve hooked up to the vac port and the line from the vapor canister hooked up to one of the small ports on the valve and one of two hard lines hooked up to the other port on the valve. But my a/c will only come out of the defrost and my carruns great sometimes and not so great at other times. I have hvac illustrations and vacuum illustrations but I can't find anything that confirms what these two hard lines are. can anybody help? Similar to THEKING from Sweden but I'm not having the other problems he's having. I've seen all the pics he's got posted but there must be adifference between an 89 tpi and a91 tpi he doesn't seem to have a map sensor.