Make sure your water temp sensor wire connection is good and clean. And yes indeed, vacume leaks cause extreme havoc. Check for rpm rise while taking a propane torch with a rubber hose attached and running the end of it around the carb and intake joints. Catalytic converters lose their effectivness quicker the smaller they are.
Going thru a California smog check receintly officially makes me an Emissions Control Phd Know-It-All (completely by default, with no choice) <img src="/forums/images/graemlins/confused.gif" alt="" />!

'80 4X4 Longbed