Serious stall problem... PLEASE HELP!

Hello I have an 89 olds cuttlass supreme and It stalls on acceleration... 3.1 multiport engine. New fuel pump, Crank censor, catalitic convertor, injectors cleaned, you name it. If anyone has any idea on how I may be able to fixe this problem please reply here, Thanks!

Remove and clean the IAC and clean the spot where the IAC goes in. Check to make sure that the vacuum hoses (multi-line vacuum hoses located on top of the throttle body) are intact and not loose.

Does it stall out completely? There are numerous problems that could cause it to hesitate and/or stall. If you haven't change the plugs and plug wires that might be a good place to start. As mentioned earlier you might want to clean the IAC and while your at it go ahead and clean the throttle body. If these things doe not solve your problem you might want to check coil packs.

Just a shot in the dark, but the ignition module could be failing and causing this. Usually, it simply makes the vehicle hard to start, especially in bad weather, until it finally fails for good. Perhaps EGR is dirty as well. My bet is the module though, as I have replaced my father's (89 Olds Cutless 2.5) and his would stall and also be hard to start. The coil packs sit on top of it (it is flat). If you want to be sure after trying everything else, you can remove the entire assy and take to NAPA or the like and most places will test the module for you for free. (My Blazer just lost it's ignition module as well)

The car tries to die on acceleration and i have to pump the gas to keep her going.

My wife has a 93 cutlass supreme seems like it to is doing what yours does. Someone said it maybe the vacuum hose being old and collapsing or the computer module

I just got a diagnostic done and the mechanic said that the computer was replaced by the previous owner. He said that the computer in there is for a 4 cylinder truck... Would this cause stalling or is he just puling my chain?
Thanks for all of your help!

I just got a diagnostic done and the mechanic said that the computer was replaced by the previous owner. He said that the computer in there is for a 4 cylinder truck... Would this cause stalling or is he just puling my chain?
Thanks for all of your help!

The computers are basically the same, only the prom inside is different depending on the car's make, model, body etc. If you had this problem from the beginning, then this might be the problem (wrong PROM) and you have to look for the right one, whicih is a pain in the butt. If the problem occured recently, than something else is at fault (and there's a lot of things that may cause this).