I also need help with codes on my 1987, but with a carb. I've read the how-to page and I'm still confused.
I can't find the connectors to activate any of the modes. There are no orphan connectors under the hood and around the pedals there are only two lonely connectors, but both are female. One's red, the other yellow. Near the firewall in the engine compartment, on the driver's side, there is a six pin female connector.
There is no oxygen sensor, the cat has a threaded plug in it. Without an oxygen monitoring unit with an LED on it, who will I read the codes? The how-to page lists codes for an 1987 with carb so I'm assuming codes are being generated/stored.
Also, I need to find an antibackfire valve.
Thanks,
XR