i have a 1991 rs camaro with a 305 and when it warms up the RPM's will flutter and eventually the car will stall and it stalls eisier when put in gear. i replaced the EGR valve throttle positioning sensor, idle air control valve and cleaned the throttle body. i even put it in the shop and they couldnt figure it out they siad it wasnt ignition or the computer. i don't know what else to try. any help? thanks

 

tbi? was the iac a new unit or junkyard? what rpm is it idling at? how is the performance of it while driving? basic tune up performed, clean air filter? most common stalling issues i encounter are dirty air filter, dirty MAF, or a vacuum leak near the MAP sensor. i had something similar happen to me with my tpi powered car, but it was only exiting the highway that it would stall. my iac was bad, but the engine idled fine and didnt stall going into gear.