Kurt,

Those codes don't tell me anything unfortunately. The 72 and 74 are for the LCD and the 83 is low brake fluid. When did you last do the fuel filter? Is the vacuum line to the fuel regulator still good? I'm wondering if this isn't a fuel problem. Considering the mileage it wouldn't surprise me if the fuel pump or regulator was somehow causing issues. You haven't run fuel cleaner through the car recently have you? I'm afraid this may take some digging to figure out but I'm looking towards fuel at this point. If you care to have your injectors cleaned and flowed, it's $150 if you bring them to me and $200 if I pull them myself and have them cleaned. I know these early 90s cars supposedly have crappy injectors. I haven't experience problems personally though. I did just have some cleaned and flowed out of a 156k mileage 91 and they were spot on. This car was not in the greatest shape either so I was surprised and the customer was pleased. Anyway, let me know if you need help Kurt, I'll do what I can.

Thanks
Trey