I just got finished doing the b16 swap. the engine runs but the engine light is on. How do i jump the ecu to find what codes i am throwing. I just want to resolve the engine light before i drive. I have a 91 crx hf model. ....Please help..

 

If you are using a 88-91 ecu, then the code can be read off the flashing red LED that is on top of the ecu.

 

i am using the ecu for the b16 engine. ill check to see if the lcd lights up on the top of that.....

 

Once again, I'm new to these cars, Where can I find the ecu and would I have lights like that on mine? I have a '89 Civic. Plus, where can I find info on the codes?

 

u should have lights on your factory ecu.....im not sure where yours is located. prob. under the pass. side carpet. look on top of it. get the helmes, haynes or chillton manual and it has the codes in it. i think 1 long bling = 10 and short blings are 1. add them up and that is the code u are throwing. i know mine has one lcd. but i think your has 4 in a row. not sure how that works. pick up a manual. they help....