91 civic hatchback STD- with d16a6 engine (SI motor)
I dont know if its already posted but sorry if it is, I just need help ASAP.

here is what happened.

I put in the d16a6 engine motor everything was good except I had a check engine light and saw that the ecu was pulling out some other ecu codes with ecu code error 4- but my friend fixed it and I bought a new dizzy then It had no more ecu codes. But some day I recieved the dizzy I installed it, no more ecu codes. but then later that day the car acted funny. sometimes the check engine light come on but turn off my car then it goes away.

But even later that night I shifted it into first then try to go to 2nd and it would just sputter and die. then I ripped up the carpet and saw the ecu pump out ECU code error 4 and 5. Can some one please help me I dont have alot of money to keep buying new dizzys. what happens is ..... it doesn't come up with check engine light, so i'm thinking its all good and dandy but checking the ecu it says ECU code error 4 and 5.

so i'm wondering if i align the dizzy wrong or something or does anyone know how to fix the crank angle sensor or whatever, please contact me at djviet@gmail.com

I really need assistance.