Starting Problems #2

My 1992 Silverado Z71 is a champ in running contdition until yesterday... It is tempermental, the throttle/Carb or even the fuel line... I can start the engine one moment and when it runs; the gagues all over the dash are dancing back and forth, but another moment I need to run alcohol into the carb to start it, until it decides to quit in traffic causing me to pop the hood and give it another squirt... (this usually happens below 1,000 rpm.) I have a temoprary solution to stoping it from stalling........ I drive in as high a gear as safe for the engine and when i have to stop (traffic or lights) i throw it in neutral and bring my RPM to about 1.5 and it wont stall on me... I just dont get it cause even in mid drive it (the problem) will correct itself for a couple days. Or just one hour. And just pop back up again (the problem) out of the middle of nowhere... Can Anyone give me a pointer?

how old is your battery?

For one thing you are in the wrong forum. Second, when has your fule filter been changed last and injectors cleaned or at least some injector cleaner run through it ?