Ok, here's the quick and dirty,
My parents bought my wife a car from my grandparents at the beginning of the
year
1995 Buick LeSabre Limited with the 3800 V6 obviously.

Soon thereafter the check engine light came on, and my wife promptly ignored
it.
A thousand or so miles (a month) later the car started stalling so she finaly
brought it to my mechanic friend.
the problem, EGR Pintle Position error. and the PCM was half fried.
He replaced the EGR valve with a known good one and replaced the PCM.
A few months later, the check engine light turns on and it is promptly
ignored.
A thousand or so miles later (a month) the car starts stalling and she brings
it back to my mechanic friend.
He and the whole shop try to figure out what the hell is going on
They replace the PCM and it seems to be working fine but they know the
problem will just come back after a while again. My buddy says he has no clue
what is going on other than possibly a short he didnt find and says, here ya
go, free new PCM and try not to drive it until you can find someone who can
fix it so you dont burn out another PCM. So my wife and I drive it as little
as possible unless my Exploder is acting up, untill we can save enough money
to bring it to a shop that will actualy charge us. Unfortunatly for out broke
selves we havent been able to save up enough before well, damn the light is
on again. Its not stalling yet, but I need to figure out what the problem
might be

Any ideas?

J