The way I (think) I understand it is that you need a tech 2 to read pre-obd2 cars. These go on ebay for more than I paid for my car. I did find this thing (link) but it has no description. It looks like it adapts the tech 2 port (don't know what that's called) to work with a serial port on a computer. But if it were that easy, I'm sure people would be doing this, right? It probably just does obd2, and we're out of luck... I would love to be able to read codes with a laptop, so somebody please prove me wrong.Kram said:Lots of nice info on that site.
Id like to get a cheap code reader for mine.. does the one you mentioned above support OBD1 (its a 1991).. Im guessing not since the signalling is differnt?