Stumble/idle prob

I have an '93 Chevy c1500 pickup w/a 262 TBI and a problem: It starts up fine, but it idles too high or too low to the point that it wants to die. Also, on take off, it stumbles pretty bad, so that I have to really give juice and it runs fine. Also, when I slow down at a stoplight, just as I approach that 5 mph- 0 mph, it just about dies and at the very last second it kicks back in.

Any ideas how to cure this stumble/near stall condition? Thanks in advance.

Check for carbon buildup on your EAC off the TBI.
Check for vacuum line leakage.
Check for EGR sticking on (pull out manually and let go - needs to shutdown clean. May also be carbon buildup in the EGR holding it slightly open.
Check your fuel filter - could be plugged up.

Any codes?