99 civic shuts off while driving.Radio stays on,everything else shuts down. When I turn off the key and turn it back on again it starts,or if I am still rolling , pop the clutch and keep going.Ignition problem?

Possibly. Or a loose connection somewhere. Who's doing the diag?

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