I have an OBD0 PR3 chipped ECU running my first gen B16 in my 91 CRX. I get in my car today...start it up and I have a CEL. Car was running fine at idle. Pull the carpet back and I read a code 68. I read it like 9 times so Im sure it was a 68. I turn off the car, go pull my ECU fuse to reset the ECU then wait the 15 sec or whatever, put fuse back in and go to start the car and nothing....my battery light, oil light, and brake light go dim. Hmmm ok. Try to start it again and my main relay makes a nasty noise all lights go out and nothing happens. (lil ticked off and confused at this point) Try it again and she starts right up and I drive home.

Code 68? I did some searching and saw that there is no such thing in a Honda ECU. Maybe I missed something but I didnt even think OBD0 codes went that high.

So, main relay is going bad also?

Any ideas?

Matt

 

get a new main relay, and clean your wireharness ground at the thermostat, also check yolur engine grounds. hopefully your ecu isnt about to take a ****

 

probably didnt count them right.

 

I counted the 6 long lights followed by 8 short blinks. A couple times it also went into limp mode. One solid light. I would just shut if off and start it again and the limp would go away. I had a couple main relays sittin around and tried them both with the same outcome.

I came to conclusion it was the battery so I stole the battery out of my "racecar" and it starts now.

So Im guessin the battery just decided to give up? I dont know...I hate electrical ****.

 

Solid ECU light could mean your ECU is Burned, Try another ECU