do you mean the computer inside the car?
i'm not sure if the '86 has a diagnostic port on it but if it does you can get your mechanic (a local guy should be able to do this for a few bucks) to just plug in this computer into that port and it will give some problem codes, from there he might be able to diagnose the problem.
good luck, and if makes you feel any better, your not alone with having your car mysteriously die on you; mine died this afternoon and i dont even have anything close to 240k on my 900.
i'm not sure if the '86 has a diagnostic port on it but if it does you can get your mechanic (a local guy should be able to do this for a few bucks) to just plug in this computer into that port and it will give some problem codes, from there he might be able to diagnose the problem.
good luck, and if makes you feel any better, your not alone with having your car mysteriously die on you; mine died this afternoon and i dont even have anything close to 240k on my 900.
