2nd the throttle body cleaning. Sounds like you've been shooting the parts cannon pretty hard on this. But not a bad thing as many of those parts are probably past their prime anyway, right? Here are some non cannon approaches as well. MAF sensor cleaning. Not that familiar with your year and engine config...but I'd borrow fuel pressure gauge (should be schrader valve on fuel rail that feeds injectors) and check that pressure. If your year/engine has fuel pressure regulator, that will help determine if that is OK. Pretty sure it will have one, and prolly only $10-15 part to replace. I'd run a tank or two with quality fuel system cleaner like Tecron, lucas, etc....that will clean up injectors, piston tops, valves, plenum, etc. if not done already. Speaking of injectors (only 4 to deal with) I'd check to make sure they are all squirting/atomizing properly. They can go bad...and sometimes be intermittent failure like you are describing...especially with feeling like starving for fuel. Check the wiring to them as well, the plugs and follow them back a bit...subject to a lot of heat! Lastly, check/clean/re-stablish your primary grounds! Like battery to block, etc (not sure how many on yours) those can get rusty and wonky over 30 years and cause all sorts of probs (usually on/off type probs at first) with how things are running...as it can cause little shorts to ecm, injectors, ignition, etc. Some things to try during a fun saturday...without a ton of money spent. Good luck, let us know.
