Thanks to all of your input, I was able to find the problem causing my engine to run rich.. It turned out to be a bad water temp sensor. Thanks for all your help, guys!

One more question.. When I bought this car last month, I noticed this wire laying around not plugged into anything.. Does anyone know what this is and where it's supposed to plug into? It's near the water temp sensor. I circled it in red.
Thanks again!

-Matt

 

its normal.. Its something american cars didnt get

 

That looks like the EGR plug to me..

 

egr or air pump i forget which but i dont belive u need it. that is cali egr plug btw

 

EGR.

California cars have an EGR switch.

 

yeah thats a funny one. search for blue plug and you'll see how many other people couldn't figure out what that was for me included.

its not needed. some say it is used on automatics others say egr. just fuggetaboutit.

 

Its not used on automatics. I know I have one and its not plug to anything on mine.

 

Same for me!

 

It is used on automatics and 5 spds in California, as far as I know.

 

I have it on my car too

 

I think everyone has seen the "little blue plug" at some point and freaked out cus it wasn't connected to anything. I still do it every now and then, then I remember threads like these...

Long story short, if you're not in Cali, don't worry about it.

 

Yes, it is plug B1-44 EGR switch on the Cali models only.

 

^ i posted about that plug the other day.. Above post is correct.