Car wouldnt start so we jumped it and got it started.I happened again but this time it turns but not over.We replace the battery new and still wont start even if we try to jump the new battery

sounds like you have a failing ecu. the capacitors in the ecu are worn out. there has been a lot of problems with the ecu on mazda's over the years, only take one out put overload from the alternator and the ecu starts playing up. no codes come up as it don't code its self. having the battery off is like a reset.

check the battery cable for a good connection then make sure its in park move the gear shifter around and place back in park. check the head lights for full power. last thing is jump it with cables to make sure the battery is strong.

Wrong belt. Check with parts store make sure you got the right belt. If that's not the case then one of your pulleys are worn out and causing it to jump time

I would first try to jump start it, just to see if it does start. Then I would replace the starter relay - at $12.49 it isn't a bad idea to change it.

http://www.oreillyauto.com/site/c/search/Starter+Relay/01833/C0330.oap?make=Jeep&model=Grand+Cherokee&year=1999&vi=1431778

check wiring and fuseable link at battery

check your connection to the battery might need new cable ends

sounded like the altinator, when you replaced it did you plug it in and check it.. Thanks wired good luck

Alternator is bad. It is not charging the battery as you drive.

Sounds like an antitheft problem I would start with the antitheft system. Usually when you only have one key all keys have to be programmed together even the original. When you have more than one it is easy to program additional keys.

it could be the starter sticking next time when it doesnt start try tapping the starter with a spanner.