why is it when i jump start battery amd remove cables car shuts off?

battery is discharged/shorted and/or used alternator is bad.take good battery from another car as long as the cables hook up the same,and the battery will fit in the battery tray,start the car,see what happens.use a volt meter after car is running and check battery voltage.should be 13.5-14.5 volts dc.if less,the alternator is bad.

If your engine shuts off when you disconnect the jumper cables your alternator is not providing enough current to keep the car running and your existing battery is extremely weak. A car will run on a fully charged battery for a short period of time (10-20 minutes - some racecars don't have alternators) And a car will run with a good alternator without a battery in the car (but can damage the alternator so don't try it) Something is keeping the alternator from recharging the battery and providing current for the car to run.