Is there any way to reset the codes in my 88 GT?

 

I am assuming you are referring to diagnostic codes for the EEC? One way is to disconnect battery for about 2 or 3 minutes. Also there are many posts of how to retrieve codes without a scanner like: http://www.turbotbird.com/techinfo/R...stic_codes.htm



I tested my 93 SHO when it developed a problem and bingo right to problem : EGR valve.