One of my cars. The ‘96 Integra:
Would start fine, but engine would die the moment I released the key from the start position.
Failed/worn ignition switch.
A well known recall item shortly after the car’s production. Original owner does not pay attention to such things so the switch is not replaced for free.
18 years later, I call Honda in case recall is still open, I’m told no.
Okay, it’s on me to fix.
Call dealership to find cost to repair: $70 for new switch, $200 in labor to install. Five days until switch arrives…
Need my car operating sooner than that.
Remove steering column cover, unscrew switch from ignition lock.
Pry switch apart.
Remove spring that returns key to “on” after starting.
Reassemble switch.
Use screwdriver to start car then gently turn switch back just enough to disengage starter.
Switch is now halfway between “start” and “on” positions, allowing car to stay running.
Some systems are contused, aircon will not work, same for ABS, engine cooling fan, car audio, some interior lights.
Car runs and drives but must be started and stopped by inserting screwdriver into hanging ignition switch.
New switch arrives at dealership. I pick up, install myself.
All is back to normal.