Stalling

This is my girl friends car and it unusually only stalls with her driving, I mean after I have done some repairs like the spark plugs, wires, and fuel filter I sort of beat on it to see how it ran and it seemed fine but later on it stalled while I was in school. It stalled once with me in the car and it was at a traffic light when she stopped. The car kind of ran rough like a really weak bog and then dies. It took three trys to restart it but it was fine after that until she refilled. The idle is fine, about steady 1k rpm. Ill look into that list of maintenence you suggested and I will reply thank you very much. If there is anything else you could think of from my most recent post please let mo know

Yesterday I changed the pcv valve cause it was deffinately pretty abused. My step brother helped me clean my fuel injectors by pouring fuel injection cleaner through a vaccum line and held it at 2k rpm after that was done we took it for a test drive and things seemed better but the trans fluid over heat light came on. I looked under the car and I thought that it was leaking dex cool cause the fluid looked brown, but when I swiped some up on my finger it was too thick so I thought maybe trans fluid so I pulled the dipstick and it matched, but I dont understand where the leak is cause the dipstick reads that its just a little overfull. Now do you have any clue where the leak might be cause it is right under the radiator and how the trans over heat light comes on, and its full yet leaking. Another thing she told me was the car smelt like sulfer which I have no clue what would smell like sulfer.

Yes the fan does turn on and the car doesnt over heat. What I dont get is how is the trans fluid leaking and it still be full. The lines to the tankn cannot be corroded because the radiator was replaced in september 05' but it might be possible one of the lines are busted. Its there a holding tank like for the dexcool maybe an over flow tank that could have gotten cracked? And whats the deal with driving cause the car does not over heat, and it is not low on trans fluid but the warning lights are coming on for the trans fluid over heating : what is your suggestion. Do you have a round abouyt of how much this all would cost