cause it's junk
When you stop, you may be letting the clutch out to early.
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.
Could be a vacuum leak
Travelling to slow in a high gear, so clutch in and lower the gear.
The engine isn't receiving the correct amount of fuel which will stall the motor. Also if the oxygen censor isn't working properly then the motor will stall.
probs a mechanical problem
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.
CHECK COIL PACKS
is the exhaust pipe pluged causing back pressure ?
don't have an absolute answer, but mine started doing that last summer. Most often it would shake and shudder and worry me that it would stall out. But never got that bad. Then after 7 months of that, noticed some steam coming out the front end. Not sure the answer on that either. The dealership noticed right off the coolant was way past due for replacement. They changed the coolant, no more steam so far and the shudder/shake has been a very rare occurance now.
could be that the choke is not adjusted right
its probably just your idle kicking in when u stop, this keeps your car ideling at a certain RPM so your car dont stall, and die.