The first thing I would suggest is going to an Advance Auto or Auto Zone and they will usually run a trouble code check for free. You might have to go to a repair facility to get this done. But, It should not cost much.
There are a lot of possibilities. It does sound like a fuel system management problem. The fuel pump relay could be failing internitantly.
With the mileage on your car, there is a good possiblity that there is something that is dirty enough to effect fuel delivery. The injectors may be clogged or the Idle Air Control Valve, IACV, or emissions equipment such as the Exhaust Gas Return, EGR.
All you can do in these cases is take apart the intake up to and including the throttle body and the aforementioned parts, (which are located on the intake mainifold near the throttle boddy), and clean them.
Another possibility is the the catalytic converter is clogged.
Here is a link that walks through all general possiblities to diagnose the problem that is making your car stall.
I hope this information helps. Get back to us with the trouble codes if you need any help with that.
Wednesday, October 5th, 2011 AT 6:30 PM