I little help?

Okay, not sure what is going on and maybe I'm missing something really obvious. I have a 91 Civic and when I start the car up it runs fine for about 20 minutes or so, but then sometimes it will run up to an hour just fine. But then it will start to run bad, hesitate, and try to die sometimes until the check engine light comes on and then it runs better than it did when I started the car up. I was told by someone that it was the O2 sensor, but I don't know, the ECU portion of the motor is still something I am learning about so that is beyond me. Any help would be much appreciated! Thanks.

do a search on how to pull a code, and then do it and tell us which one it is.

lol Wow I am going to sound like an idiot, but where is it located at, I have the code list up jsut dont know where to find it...dont' smack me please lol.

lol.. noobs.... just kidding, no i mean find out how to get the code off your cars ECU (what causing the CEL) and then tell us what code it is.

Oh I know what you mean I'm trying to pull the code but I cannot find where the ECU is located at.

on the passenger side inder the rug, youll need to take off a metal plate to get to it.

Okay I got to the Ecu and the light is blinking once, then pause then blink and pause over and over and over. Does that help at all?

how long are the blinks???

They are very short.

its your 02 senser :)

the way to read the light is that if it holds for a little bit then that counts as ten and every time it flashes fast that counts as one

example

hold hold flash flash flash = code 23
hold flash =code 11

hope this helps

later

ok, so my understanding is its blinking fast once, pausing then doing it again??? if so, thats a code 1, your O2 sensor...

Thank you, that actually helps alot, so I will just go get a new O2 sensor. Thanks again, I really appreciate it!

glad we could help.

i love pre-obd =)

your welcome, hope everythign works out for ya