Could be a vacuum leak
try using fuel injector cleaner.
bad booster pump or air in brake lines
cause it's junk
Several things can cause your car to stall and shake when you stop. Replacing the spark plugs and spark plug wires may cure the problem.
if it is automatic then this would be caused by shift down is not working in transmission
The engine could be running rough for several reasons. If possible, run computer codes to see if a problem show up. Check the spark plugs for consistent color and wear. If one looks different then there is a problem with the system for that cylinder.
Travelling to slow in a high gear, so clutch in and lower the gear.
I had the same problem with my Eclipse it was the spyder turbo i had put cheap gas in it. went to 93 octane had no problems.
Perhaps a vacuum leak or bad vacuum check valve in power brake booster
Does it shake and stall when decellerating or at anytime? because mine seems to do that but its only when decellerating at a stop light or stop sign or whever and it dont always do it.. only after long drives. (1992 Pontiac Sunbird). It might be a bad EGR Valve.
This was originally my question. It ended up being the fuel pressure regulator.
is the exhaust pipe pluged causing back pressure ?