I have a 1993 honda civic ex 1.6 litter 4cyl hard starting then starts some times idles then when running won't pass 2500rpm after it do go 2500rpm it stalls

Replace the Ignition Control Module (ICM) and coil:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-4.html#post265896