Check engine lite on when driving but not when u turn the key
 

I have a 92/95 civic I'm working on the car model is a cx and I installed a d16z6 completely stock ..

When starting the car the check engine will be on but when I turn it off and turn the key on to prime the pump there I'n so check engine light it turn on then off just like normal

Any other similar problem or anyone that can eliminat mine lol

Jump SCS and check the code. It should be stored.

weird usually it should stay on ..

but sounds normal o2 sensor is finally reading or if its the o2 sensor thats bad NOT reading .. i dont know get the codes checked in for a bad o2 sensor..