ok so the ef isnt running like it should be.
here is the run down.
91 si, converted to a obd 1 (which was rigged up alot. i've fixed it alot) w a obd1 d15b7 w 140k on it.
so i've replaced the water pump, thermostat, lower rad hose. the idle has been off since the swap and im stumped now with what to do. you crank it up and it will idle fine, but when ya drive it and come to a stop, its like it wants to die. so i adjusted the idle up a little, runs alot smoother now. but still had a little up and down when running. so today i went to take the iacv off to clean it w brake parts cleaner. so i did and dumb me un-hooked the hoses on it and soaked myself with hot antifreeze.... but anyways got it cleaned and back on. drove it about 6 miles, went home and then drove to my girls house and its rough as hell idling now. if your in the gas, its fine, but let off or below 3k and its like it can hardly stay running.

i've been told i may have a vacuum problem, but i have no idea where to start with that.....

if you have any ideas please help!!! thanks!

 

i've read a few other posts on here and a few on carolinahondas but still kinda lost