I know what you mean silver i have the same problem with my 91 gt.
It stalls on idle but only when I go to stop at a light, and I found that
it does it more often when drive it ruff...
It only does it once a week but it´s dangerous when it´s stalls in the middle of
the road while turning at a light.
Anyway, eversince i changed my alternator even if it can´t be related by any
way the problem seem to have gone away.
Good luck!
It stalls on idle but only when I go to stop at a light, and I found that
it does it more often when drive it ruff...
It only does it once a week but it´s dangerous when it´s stalls in the middle of
the road while turning at a light.
Anyway, eversince i changed my alternator even if it can´t be related by any
way the problem seem to have gone away.
Good luck!