Large Hesitation similar to no throttle
 

I always think twice about posting for help since I don't want to revisit old topics but I am having an issue that I cant seem to find a discussion for . After the car has been running well for 20 -30 mins around that time when I press the throttle all the way the car hesitates and doesn't provide any power. Its like I am not pressing the throttle at all . It doesn't allow me to really increase in the rev range even with partial throttle so I turn the key off and on while driving and after, lets say 30 seconds the car will run strong again. I have replaced spark plugs, fuel pump, replaced my tps and reset it to spec both with the old and new one. I checked my ecu codes and I am getting an atmospheric pressure sensor code. I replaced this recently which fixed another problem with the car that included back firing so after resetting the ecu by disconnecting the battery , I am not sure why it comes back. My car is a 1988 na gtu coupe if anyone can provide any insight or at least point me in the right direction I would be very grateful.