Having Trouble Need Suggestions

[C Davis]

Hey guys. First a little background: Red/Red 1990 #2874, nothing exotic, top end port and headers. For the last couple of days when I first crank the car it does fine for the first mile or so and then when leaving a red light or intersection it would "bog" when pulling off. I could engage the clutch and rev the engine and it would clear or once the rpm's got high enough it feels like the secondaries open and it would clear up with no more problems during the particular drive. Yesterday I left work, same deal, no problems at first, then stumbled, then cleared up, only this time 20 or 30 miles down the road in sixth gear and cruise set on 70 mph it started bogging and stumbling again. I managed to make it home by keeping the rpm's above 3500 or so but this time it hasn't gone away. It idles rough but will idle and tries to go dead when slowing down for a stop or turn. So far it hasn't thrown any codes, but I am borrowing a scanner from a fellow forum member this afternoon to see if it will tell me something. My initial thought was injectors, but I'm hoping someone has had similer issues that was just something simple. Sorry for the long winded run on question, and thanks in advance for any advice.