It definitely sounds like the AIC isn't working properly
When you push the gas pedal on a fuel-injected car like the SAAB 900, you're not squirting fuel into the engine like with the old carbureted cars--you're adding extra air. Adding the right amount of extra air is the AIC valve's job.
The AIC is about the size of a soda can, attached to the head just in front of the fuel rail. It has hoses going from the side and the bottom, and an electrical connector on top. Try removing it and flushing it out with WD-40. If this doesn't help, try another one from a junkyard; one from 1988 to 1990 will fit.
When you push the gas pedal on a fuel-injected car like the SAAB 900, you're not squirting fuel into the engine like with the old carbureted cars--you're adding extra air. Adding the right amount of extra air is the AIC valve's job.
The AIC is about the size of a soda can, attached to the head just in front of the fuel rail. It has hoses going from the side and the bottom, and an electrical connector on top. Try removing it and flushing it out with WD-40. If this doesn't help, try another one from a junkyard; one from 1988 to 1990 will fit.