How to diagnose Check Engine on 3rd gen?
 

My 1995 RX-7 Check engine light just came on. The car appears to be running fine. No overheating, good oil pressure etc. Is there a way I can get the codes myself, or do I need to take it in?

I found a site
 

I found the info I needed on http://www.k-rad.com/errcodes.html . It turns out I have error code 16 : EGR Switch open or short circuit. At least I now know whats wrong.