legacycentral bbs

I have been having problems with the CEL coming on when I start my car up. I have noticed if the ambient temperature is above 50 degrees then the CEL might only come on for a minute then turn off, and might only pop on when I am at a stop light. For about the past 3 weeks, we have had freezing temperatures, and will stay on most of my commute to work, but will eventually turn off, but will still pop on when I am at a stoplight.
When I first bought my car, it came on, I ran a tank of gas with fuel injector cleaner. At this time the Ambient Temperature didn't get below 60 degrees...
So what might be causing this problem?

I know I am lazy, but I havn't got to around testing things yet...

pull them codes buddy

I will get around to pulling the codes on of these days(probally in the next few weeks), but I am just seeing if anyone knows what would be causing the problem. I also notice I have the light just stay on sometimes when there is rain...

I had similar symptoms and it wound up being the knock sensor. Who knows what code yours will spit out, but ya never know.

Rish

I was sort of thinking that it might be the engine knock sensor, so when I get around to pulling the codes, I will keep this one in mind...

dude you got a 93. pulling codes is even easier on the 92-94 legs. you dont even have to take anything apart. to the right of the bottom of the dash on the drivers side is the connector right there. i pulled codes in a parking lot in the dark.try it out. check out joshs webpage its got all the info there.
Cheers

yes.....I make it a point to not even guess what the issue is if a CEL is coming on.....there's no point. Just check the codes. Once you get the connectors out once, you can usually just reach up there and connect them by hand. That's what I can do.

Here's another pic. Be aware too, that on some of the 92+ models one or both connectors may be on the right side of the steering column.

http://www.main.experiencetherave.com:8 ... cuhide.jpg

I had a hell of a time finding the connectors when I first looked for 'em. Now that I know where they are it'll be a little easier next time.
Don't get discouraged if you can't find them at first.

-Brian

I might try and pull the codes this weekend...

Today, I finally have enough time to pull the codes from the ECU, but I am having the hardest time finding the 2 black connectors, I can find the green ones though. Does anyone have any advice for me in finding them, would it help if I moved the ECU???

they should be right next to the green ones, probably still taped to something, see if you can't get a flashlight and a mirror up there.

Wait, just after re-reading this thread, Josh mentions something about either one or both of the connectors being on the right side of the steering wheel on the '92+ models. I remember seeing a black connector on the right side. I might look on the right side of the steering wheel now

Ok, I found them, they are on the right side of the steering wheel. It flashed about 10 codes . I am going to reset the ECU, and trying pulling the codes again in the morning.

One thing I noticed after I was driving the car after I reset the ECU, is that the CEL would come on shorty after I turned the heat on, and would go off shortly after I turned off the heat. I guess I won't really know what is going on until I pull the codes again, which I don't know if I will do today, due to the weather ...

I bet its the idle switch code.

I will check the codes again in a few days, I got the O2 sensor replaced, but still havn't reset the ECU.