I just changed my alternator, but my car wont start, when i jump it it stays on for a minute.?

when i remove the battery terminal it cuts off. do you think its the alternator or my battery
I just changed my alternator, but my car wont start, when i jump it it stays on for a minute.?
you can buy a new bad alternator take it back to where you got it have it checked if bad get another but have it checked before you leave the store this time
I just changed my alternator, but my car wont start, when i jump it it stays on for a minute.?
you can pull the altenator and battery and auto zone or checker will check it for free. You might also want to see if you can start it off the starter solenoid. take a long screw and a helper find the starter and there should be two bolt looking things with wires attrached off the solenoid touch the two together with the screwdriver while the helper turns the key.. be careful u will get a spark but it dont hurt you may also want to clean these connections. the solenoid or the starter may be the problem
well on older cars removing the cable would be a sign that the atlerantor is not working sure you have the wires right... and if its a newer model you can really fry the eletronic when you see that little spark jump when you take off the cable when the car is running doing more damage is a no no now you cant do it........ so if it runs drive it to any shop or auto zone and have it tested while its running they can tell you if its working or whats bad in five minutes or less so stop guessing
Usually if the car cuts off after you jump it and have removed the battery cable, it indicates that the alternator is bad. If the car keeps running after disconnecting the battery cable the battery is bad. It sounds counter-intuitive, but generally that's how you can distinguish which of the two parts are bad. Since you just replaced the alternator, maybe the alternator belt needs tightening. Did you take it for a good 30 minute drive after putting a new alternator on, or just let it sit there idling? If you didn't drive it long enough for the alternator to recharge the battery, it won't stay running long. I think you need to check the belt tension %26amp; take it for a good long drive. And how old is your battery? It could be just weak enough and old enough to no longer hold a good charge, even with a new alternator.
STOP PLAYING AND TAKE THE BATTERY TO A AUTO PART PLACE AND GET A NEW BATTERY.

TAKE THE OLD BATTERY IN AS THEY WILL CHARGE YOU TILL YOU HAVE THE BATTERY CORE AND THEY NEED TO SEE IT TO MAKE SURE IT IS THE RIGHT ONE AND GAS IS WHAT??

HAVE FUN AND BE SAFE