well i have a problem my car RPm's seem to drop too low when i am going up a drive way to park it also sometimes dies when i am backing up down a hill or anywhere the rpms drop real low and it wants to die or just dies i changed the tps but i ont know what it could be i tried unplugging the EGR valve and it helped i whouldnt do the real low RPM drop anymmore well any help ill be appreciated

 

My 89 had the same problem, it was like it was just stalling out for nno reason. I never found out what the problem was so it you do let me know and maybe I can fix it as well.