How long since a tune-up? Any applicable trouble codes? Does it restart quickly after it stalls? On a clear day, start the vehicle, raise the hood, use spray bottle with water, spray the plug wires, any effect.

Raise the hood in the dark, engine running, does it look like the great northern lights, can you see fire jumping?

also check the distributor cap for small cracks, moisture in the cap plays havoc with an engine....(spray the cap also).......................

Answer = both. The clutch master cylinder can be removed with the following steps;
Remove one bolt from the firewall from inside the engine bay. Next remove the other bolt that goes inside the firewall - underneath the white switch on the clutch pedal. That switch needs to come off and the other bolt is under that on the firewall. The two nuts to pull the switch are 10mm and the nut for the master cylinder is 12mm.

Autozone have it for $10 for both http://www.autozone.com/.../...dImageOverlay.jsp

Your owners shows, you don't have regular dipstick that you can access from engine compartment. To check tranny fluid, you have to get under the vehicle to get at the tranny, automatic. There may be a different type check plug depending on the tranny #. If there a drain plug on the tranny pan? Is there a smaller plug inside the larger one? if so you remove the smaller one to check.

Your owners manual say to let the dealership take care of it? If you have to add fluid, it can be a pain/ messy without the proper tool.

First thing that I would do is check the transmission fluid level. If it is low fill it and try again. Make sure you check the fluid with the car running. If it is full, check the color and smell of the fluid. If the fluid is brown instead of red and smells burnt you fluid is no good and at the very least you need to get it serviced.

check your axles from transmission to front wheels. you will need help to check. start engine and slowly let off of the brake. if you see any movement of the axles and no movement of vehicle. one axle is broken.

I have this same problem, if you sort of work the gas pedal for a bit it does start to work, but i think it may be the shift sensor in the transmission.