This may be the same thing as what happened to my 86 just after I bought
it. The symptoms sound remarkably similar. It turned out to be the fuel
pump relay. Do you sometimes hear (or at leaart" -->
Before jumping in though, have you checked the fuse behind the ashtray? I'm
not joking, remove the ashtray and pull the fuse to see if it's burnt out.
Good luck,
Steve