Check Engine light on

I'm a newbie.

Midas told me my o2 sensor circuit is bad.

Can I change it by my self? anyone can give some link where i can find the instruction?

Yeah you can change it yourself. Go to Autozone, get a new O2 sensor and a wrench. Switch 'em.

you can check the code
if you goto
http://www.bol.ucla.edu/~cchiu1/ecuerrorcodes.html

Which one is front B2 among all the O2 sensors in my 94 GXE?:confused:

WHere is it in the hood?

Today I revealed that the mode switch on ECU is also used to set idle speed. my engine sound becomes very terrible when I turn it fully clockwise.


The pattern of LED is like:

s,s,s,_,L,L,_ L,L,L... WHat does that mean?

It doesn't work like the way Cheston said

("s"-short beep, "L"-long beep)